diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea1472e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+output/
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..30cf57e
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,10 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Ignored default folder with query files
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
new file mode 100644
index 0000000..105ce2d
--- /dev/null
+++ b/.idea/inspectionProfiles/profiles_settings.xml
@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..a12e102
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/nerdletter-cypher.iml" filepath="$PROJECT_DIR$/.idea/nerdletter-cypher.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/nerdletter-cypher.iml b/.idea/nerdletter-cypher.iml
new file mode 100644
index 0000000..d0876a7
--- /dev/null
+++ b/.idea/nerdletter-cypher.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/CLAUDE.md b/CLAUDE.md
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index 0000000..78a7413
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,45 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Nerdletter Cypher is a collection of bash scripts that generate "numbers station" style MP4 videos for the Nerdletter newsletter. Each video displays a ciphertext message with retro green-on-black terminal aesthetics and a synthesized voice reading the message aloud, mimicking cold-war shortwave numbers stations (specifically the Lincolnshire Poacher style).
+
+Subscribers use a "Day Book" (a one-time pad or codebook) to decode the ciphertext messages.
+
+## Script Variants
+
+All scripts live in `scripts/` and share a common interface:
+
+```bash
+./script.sh "CIPHERTEXT GROUPS" PAGE_NUMBER [EPISODE_NUMBER]
+# Example: ./script.sh "HLXIB JACJP ERXHN EFM" 001 01
+```
+
+- **nerdletter_numbers_station.sh** — Original basic version (espeak-ng + ffmpeg, single pass)
+- **nerdletter_numbers_station_linux.sh** — Linux variant with letter-by-letter pronunciation
+- **nerdletter_numbers_station_mac.sh** / **_mac_old.sh** — macOS variants (uses `Courier New` font for Homebrew ffmpeg compatibility)
+- **nerdletter_numbers_station_poacher.sh** through **poacher10.sh** — Iterative refinements adding: Lincolnshire Poacher intro music, shortwave static mixing, letter-by-letter speech with inter-group pauses, longer durations, and audio layering
+
+The `poacher` series represents progressive iterations. The highest-numbered poacher script (`poacher10.sh`) is the most refined version with letter-by-letter speech, pauses between cipher groups, and full audio mixing (poacher intro + static + voice).
+
+## Dependencies
+
+- **espeak-ng** — text-to-speech synthesis (voice: `en+f3`, female)
+- **ffmpeg** — video generation, audio mixing, and final MP4 encoding
+- **wget** — (poacher scripts only) for downloading the Lincolnshire Poacher intro audio from archive.org
+
+## Assets
+
+- `assets/poacher_intro.wav` — Lincolnshire Poacher music intro clip
+- `assets/static.wav` — Shortwave radio static noise
+- `output/` — Generated MP4 files land here (though some scripts output to the current working directory)
+
+## Key Parameters Across Scripts
+
+espeak-ng flags control the voice character:
+- `-s` speech rate (lower = slower/more dramatic, ranges from 74-120 across variants)
+- `-k` capitals emphasis
+- `-a` amplitude/volume
+- `-ven+f3` English female voice variant 3
diff --git a/output/nerdletter_secret_01_page001.mp4 b/output/nerdletter_secret_01_page001.mp4
index a744860..311f5aa 100644
Binary files a/output/nerdletter_secret_01_page001.mp4 and b/output/nerdletter_secret_01_page001.mp4 differ
diff --git a/scripts/nerdletter_numbers_station_final.sh b/scripts/nerdletter_numbers_station_final.sh
new file mode 100755
index 0000000..778065b
--- /dev/null
+++ b/scripts/nerdletter_numbers_station_final.sh
@@ -0,0 +1,122 @@
+#!/bin/bash
+# NERDLETTER NUMBERS STATION MP4 GENERATOR
+# Lincolnshire Poacher style with letter-by-letter cipher readout
+#
+# Audio structure:
+#   Base layer (full duration): low-volume shortwave static
+#   On top, in sequence:
+#     1. Lincolnshire Poacher theme
+#     2. Voice: announcement + letters (0.5s between letters, 1.0s between groups)
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+ASSETS_DIR="${SCRIPT_DIR}/../assets"
+
+MESSAGE="$1"          # e.g. "HLXIB JACJP ERXHN EFM"
+PAGE="$2"             # e.g. 001
+EPISODE="${3:-01}"
+
+OUTFILE="nerdletter_secret_${EPISODE}_page${PAGE}.mp4"
+TMPDIR=$(mktemp -d)
+trap 'rm -rf "$TMPDIR"' EXIT
+
+SAMPLE_RATE=22050
+
+echo "=== NERDLETTER SECRET TRANSMISSION #${EPISODE} ==="
+echo "Page ${PAGE} — Generating MP4..."
+
+# --- 1. Generate voice announcement ---
+INTRO_TEXT="NERDLETTER SECRET MESSAGE ${EPISODE}. USE DAY BOOK PAGE ${PAGE}."
+echo "$INTRO_TEXT" | \
+  espeak-ng -ven+f3 -s88 -k50 -a 200 -w "${TMPDIR}/intro.wav" --punct="" 2>/dev/null
+
+# --- 2. Generate letter-by-letter audio with proper gaps ---
+# Build an ffmpeg concat list: each letter as a wav, with silence between
+CONCAT_LIST="${TMPDIR}/concat.txt"
+> "$CONCAT_LIST"
+PART=0
+
+# Pre-generate silence files
+ffmpeg -f lavfi -i "anullsrc=r=${SAMPLE_RATE}:cl=mono" \
+  -t 0.45 -c:a pcm_s16le "${TMPDIR}/gap_letter.wav" -y 2>/dev/null
+ffmpeg -f lavfi -i "anullsrc=r=${SAMPLE_RATE}:cl=mono" \
+  -t 0.9 -c:a pcm_s16le "${TMPDIR}/gap_group.wav" -y 2>/dev/null
+
+for group in $MESSAGE; do
+    echo "  Group: $group"
+    for ((i=0; i<${#group}; i++)); do
+        letter="${group:$i:1}"
+        PART_FILE="${TMPDIR}/letter_${PART}.wav"
+        echo "$letter" | espeak-ng -ven+f3 -s81 -k65 -a 210 -w "$PART_FILE" 2>/dev/null
+        echo "file '${PART_FILE}'" >> "$CONCAT_LIST"
+        PART=$((PART + 1))
+
+        # 0.5s gap after each letter (except last letter of last group)
+        if [ $i -lt $((${#group} - 1)) ]; then
+            echo "file '${TMPDIR}/gap_letter.wav'" >> "$CONCAT_LIST"
+        fi
+    done
+    # 1.0s gap after each group
+    echo "file '${TMPDIR}/gap_group.wav'" >> "$CONCAT_LIST"
+done
+
+# Concatenate all letter parts into one track
+ffmpeg -f concat -safe 0 -i "$CONCAT_LIST" \
+  -c:a pcm_s16le "${TMPDIR}/letters.wav" -y 2>/dev/null
+
+# --- 3. Generate closing announcement ---
+OUTRO_TEXT="END TRANSMISSION. TUNE TO OLD COMPUTER NERD DOT COM FOR FURTHER INSTRUCTIONS."
+echo "$OUTRO_TEXT" | \
+  espeak-ng -ven+f3 -s88 -k50 -a 200 -w "${TMPDIR}/outro.wav" --punct="" 2>/dev/null
+
+# --- 4. Concatenate intro + letters + outro ---
+VOICE_LIST="${TMPDIR}/voice_concat.txt"
+echo "file '${TMPDIR}/intro.wav'" > "$VOICE_LIST"
+echo "file '${TMPDIR}/gap_group.wav'" >> "$VOICE_LIST"
+echo "file '${TMPDIR}/letters.wav'" >> "$VOICE_LIST"
+echo "file '${TMPDIR}/gap_group.wav'" >> "$VOICE_LIST"
+echo "file '${TMPDIR}/outro.wav'" >> "$VOICE_LIST"
+
+ffmpeg -f concat -safe 0 -i "$VOICE_LIST" \
+  -ar ${SAMPLE_RATE} -ac 1 -c:a pcm_s16le "${TMPDIR}/voice.wav" -y 2>/dev/null
+
+# --- 5. Concatenate poacher theme + voice into foreground track ---
+FG_LIST="${TMPDIR}/fg_concat.txt"
+echo "file '${TMPDIR}/poacher_resampled.wav'" > "$FG_LIST"
+echo "file '${TMPDIR}/voice.wav'" >> "$FG_LIST"
+
+# Resample poacher intro to match
+ffmpeg -i "${ASSETS_DIR}/poacher_intro.wav" \
+  -ar ${SAMPLE_RATE} -ac 1 -c:a pcm_s16le "${TMPDIR}/poacher_resampled.wav" -y 2>/dev/null
+
+ffmpeg -f concat -safe 0 -i "$FG_LIST" \
+  -c:a pcm_s16le "${TMPDIR}/foreground.wav" -y 2>/dev/null
+
+# --- 6. Get foreground duration, generate static to match ---
+FG_DUR=$(ffprobe -v quiet -show_entries format=duration -of csv=p=0 "${TMPDIR}/foreground.wav")
+echo "  Audio duration: ${FG_DUR}s"
+
+ffmpeg -f lavfi -i "anoisesrc=d=${FG_DUR}:c=0.22" \
+  -af "highpass=f=2500,lowpass=f=9000,volume=0.18" \
+  -ar ${SAMPLE_RATE} -ac 1 -t "${FG_DUR}" \
+  -c:a pcm_s16le "${TMPDIR}/static.wav" -y 2>/dev/null
+
+# --- 7. Mix static underneath foreground ---
+ffmpeg -i "${TMPDIR}/foreground.wav" -i "${TMPDIR}/static.wav" \
+  -filter_complex "[0:a][1:a]amix=inputs=2:duration=longest:normalize=0" \
+  -c:a pcm_s16le "${TMPDIR}/final_audio.wav" -y 2>/dev/null
+
+# --- 8. Build video to match audio duration ---
+# Round up to nearest second for video duration
+VIDEO_DUR=$(echo "$FG_DUR" | awk '{printf "%d", $1 + 1}')
+
+ffmpeg -f lavfi -i "color=black:s=1280x720:d=${VIDEO_DUR}" \
+  -i "${TMPDIR}/final_audio.wav" \
+  -vf "drawtext=font='Courier':fontsize=50:fontcolor=green@0.95:text='NERDLETTER SECRET TRANSMISSION #${EPISODE}':x=(w-text_w)/2:y=80, \
+drawtext=font='Courier':fontsize=36:fontcolor=green@0.85:text='USE DAY BOOK PAGE ${PAGE}':x=(w-text_w)/2:y=170, \
+drawtext=font='Courier':fontsize=44:fontcolor=lime@0.95:text='${MESSAGE}':x=(w-text_w)/2:y=270:box=1:boxcolor=black@0.75:boxborderw=15, \
+drawtext=font='Courier':fontsize=30:fontcolor=green@0.75:text='DESTROY PAGE AFTER USE — SUBSCRIBERS ONLY':x=(w-text_w)/2:y=640" \
+  -c:v libx264 -pix_fmt yuv420p -c:a aac -shortest "$OUTFILE" -y
+
+echo "Done: ${OUTFILE}"