With Nick Briggs away on holiday, David Richardson sequestered in the studio and Paul Spragg sitting at his desk with no idea how to use editing technology, it falls to sound supremo Martin Montague to undertake this week's podcast. And, despite what Nick said last week, it's all about Sherlock Holmes: The Adventure of the Perfidious Mariner.

It's just after the sinking of the Titanic, and a retired Holmes has left crime-solving behind. But he's about to be drawn into a case which will test his intellect to the limit...

Find out more about this special Sherlock Holmes release in this behind-the-scenes podcast, featuring interviews with stars Nicholas Briggs, Richard Earl, Toby Longworth, Michael Maloney and Tracey Childs, plus some clips of the story... and more!

There's also a reminder of this month's competition, which you can enter by e-mailing [email protected], the same address for all your letters. Download or stream some Holmes now!