Faced with the seemingly impossible task of identifying the remains of a body discovered in a well, Lewis has also got to contend with new boss Chief Superintendent Moody. Realising that the body in the well is connected to the murder of young artist Talika Desai, the police follow leads into the worlds of drugs, social media and the homeless community, but will they manage to link all the pieces together?

Hathaway is struggling to cope with his father's illness, as he begins his search to find out who he was before the dementia kicked in.