Important pieces of evidence come to light against all the key suspects in the case.

Cast: Jodie Whittaker, Charlotte Beaumont, David Tennant, Olivia Colman, Lenny Henry, Andrew Buchan, Emily Allison, Mark Bazeley, Josette Simon, Hannah Rae, Carolyn Pickles, Mariah Gale, Kelly Gough, Jasper Meehan, Aaron May