There's been another murder in Successville. This week D.I. Sleet is joined by singer and jungle star George Shelley.

Sleet and Shelley investigate a group of computer hackers called Incognito. One of the gang, Ed Sheeran, has been strangled to death in his den - but will this new murder investigation get in the way of something more important, Sleet's ambitions to launch a new app?

Forensics Officer, Angela Merkel, informs the pair that Sheeran had been snooping into some powerful people's mainframes and clearly somebody didn't like it...

Shelley is put through his paces as he and Sleet take techno-crime head on and interview...

Shia LaBeouf - Entrepreneur owner of Successville Technology Institute who appears very skittish. But what is he hiding? And is this the perfect place to pitch Sleet's app?

Sarah Millican - If there is one place you shouldn't hack into its Death Corp. An organisation that manufactures deadly military hardware. Millican is the big boss and appears unwilling to help the cop duo in their investigations, but why?

Jeremy Kyle - A wild and unpredictable city banker. But is he unhinged enough to kill? The detectives go undercover to discover the truth and also find investment for Sleet's app.

After meeting all three suspects, it's time for George to decide - who killed Ed Sheeran? Sleet's set up a fake Incognito press conference to lure in all three suspects. It's time for George to catch a killer. Have you been paying attention? Did you spot enough clues to work out who the murderer was?