We've already announced some of our new cast for Season 2 but we've held back a couple of surprises we want to let you in on now.
As well as return visits from Andy Hamilton, Alison Skilbeck, Catriona Knox, Paul Putner, Ellie Dickens and others, listen out for:
The Men Behaving Badly, Jonathan Creek and Blue Murder star will appear in the very first episode of Season 2, out on 27 October.
Caroline has appeared in Mister Bean, Have I Got News For You, Life of Riley and Whose Line Is It Anyway? and was most recently seen as Mrs Bumble in the BBC's Dickensian.
Hastings himself comes to Piffling in episode two of the new season. Outside of Agatha Christie's Poirot, Hugh is known as the Duke of Wellington in Sharpe, and has appeared in films including The Curse of the Pink Panther, 101 Dalmatians and Patriot Games.
Hugh is also an author, theatre director and one-time performer of the theme tune to ITV's Rainbow.
Katy Manning joins us for episode 8 of season 2. Katy's career spans three continents across theatre, screen and audio. She has performed her one woman show Me and Jezebel across Australia, and her West End appearences include Run For Your Wife, Hamlet, Real Inspector Hound and Rosencrantz and Guildenstern Are Dead.
Katy played companion Jo Grant with Jon Pertwee in Doctor Who, and reprised the role recently in The Sarah Jane Adventures, as well as in audio.