The Sixth Doctor and Peri: Volume One

 was the first audio anthology box set in The Sixth Doctor and Peri range, released in 2020 by Big Finish Productions.

Publisher's summary
Four new adventures featuring the Sixth Doctor and Peri Brown.

1.1 The Headless Ones by James Parsons and Andrew Stirling-Brown

When a distress call from an unknown source threatens to rip the TARDIS from the vortex, the Doctor and Peri arrive in nineteenth-century Africa hoping to find the cause of the disturbance. Instead, they meet a British expedition searching for a long lost tribe: the B'lemyae... better known to the locals as the Headless Ones.

1.2 Like by Jacqueline Rayner

On the Earth colony world Rusina, the populace strive to be popular. Likes lead to promotion, dislikes lead to demotion – and more recently, something worse. So when the Doctor investigates the truth behind their subscriber-led society, he finds himself about to become very unpopular indeed.

1.3 The Vanity Trap by Stuart Manning

Myrna Kendal used to be a Hollywood film star. Now she spends her life reminiscing on chat shows but there is always one unfinished film she refuses to talk about… at least until the TARDIS interrupts a TV interview, and the Doctor and Peri's appearance stirs up long-forgotten memories.

1.4 Conflict Theory by Nev Fountain

Concerned by the Doctor’s increasing over-protectiveness, Peri presents him with an ultimatum: either they seek counselling or she leaves the TARDIS permanently. Reluctant to lose one of his closest friends, the Doctor seeks out one of the finest psychoanalysts in the universe: Dr Sigmund Freud.