Secret Diary of a Rhodian Prince (audio story)

 was a full cast audio story released on 24 January 2023 by Big Finish Productions. It comprised the fifth release of the  series. It was written by Blair Mowat and featured Greg Austin as Charlie Smith and Jordan Renzo as Matteusz Andrzejewski.

Publisher's summary
What's it like being an alien stranded on a strange planet in the aftermath of a genocide? What would you think of Earth's culture? What's it like falling in love with a human when you only met one just the other week? Who is the Doctor?

And what happens if your secret diary falls into the wrong hands...?

Cast

 * Charlie - Greg Austin
 * Matteusz - Jordan Renzo
 * The Chair - Cyril Nri

Crew

 * Based on characters created by Patrick Ness
 * Senior Producers - David Richardson and John Ainsworth
 * Cover Art - Sean Longmore
 * Director - Scott Handcock
 * Executive Producer - Jason Haigh-Ellery and Nicholas Briggs
 * Writer, Producer & Music - Blair Mowat
 * Script Editor - James Goss
 * Sound Design - Toby Hrycek-Robinson

Worldbuilding

 * Charlie and Quill's house was owned by the Doctor and the only food in stock there is bags of jelly babies.

Continuity

 * Charlie refers to him and Quill being rescued from the Shadow Kin by the Twelfth Doctor. (TV: For Tonight We Might Die)
 * Charlie writes about the Doctor saving them at the school prom. (TV: For Tonight We Might Die)
 * Charlie and Matteusz discuss the group's encounter with the Leaf Dragon and Coach Dawson. (TV: The Coach with the Dragon Tattoo)
 * Charlie writes about Matteusz moving in after being kicked out by his family. (TV: Nightvisiting)
 * Matteusz reads Charlie's account of the petals and contemplating using the Cabinet of Souls. (TV: Brave-ish Heart)
 * Charlie writes an entry whilst the group are not speaking to each other following their confessions and Quill is unconscious. (TV: Detained)
 * Charlie talks to the Cabinet about the prisoner, (TV: Detained) the Daleks, (AUDIO: In Remembrance) Reagan, (AUDIO: Everybody Loves Reagan) the "lifeform that wouldn't let us stop talking", (AUDIO: Tell Me You Love Me) and Quill and Matteusz being trapped in a house on Halloween. (AUDIO: The Creeper)
 * Charlie's last entry recalls him using the Cabinet on the Shadow Kin and surviving despite a shadow being placed on him. (TV: The Lost)
 * The Chair discusses restoring a girl to her body and talking to the Angels. (TV: The Lost)