1x6 - Hidden

Cadi explores the possibility that the wrong man was convicted of Anna Williams's murder, but an interview with Elwy results in his panicking and obtains no useful information. Megan's best friend reports her missing, and Cadi realises she may be dealing with another abduction victim. Megan tries unsuccessfully to get Nia to help her escape from the cellar. The investigation turns to the possibility that the abductor is a former co-worker of Elwy's and a former schoolmate of William Parry.