Colleen Porch

The murder of an English tutor unearths a plot to steal a priceless artefact from the British Museum. Meanwhile, new CBI boss Madeleine Hightower arrives at HQ and immediately lays down the law.

Lightman is hired by a wealthy woman to do a background check on her new boyfriend, so he digs deep into the man's past to find out the truth about this social chameleon.

The NCIS team are called in to investigate when a woman claims to have witnessed the murder of a sailor. With skimpy evidence to go on, Gibbs turns the case over to McGee, who believes the woman's story is enough to continue the case, but when physical evidence of a crime isn't there, McGee pushes the team to keep looking because he senses there's more to the woman's story than meets the eye.

Nick and Warrick probe the fatal fall of a paraglider, and Catherine investigates a dispute between two neighbours that spiraled out of control, climaxing in a shooting death.

Phoebe and Paige's search for Leo leads them to the mythical island of Valhalla. Meanwhile, Phoebe discovers she is an empath, and begins to come to terms with the repercussions of her dangerous new power.