Elizabeth and Nathan uncover Oliver's secret. Rosemary worries Lee has a secret of his own. Allie's interest is piqued when Earl Wyatt returns to town.

Abby represents an environmental activist whose devotion to the cause might cost him custody of his children. Meanwhile, a meeting with an old flame lands Harry in trouble.

A documentary crew arrives to follow the SkyMed flight crew, creating turbulence among the team - especially when Stef and Chopper are forced to work outside the lines on a difficult call.

Rowan desperately partners with Cortland to try to stop Lasher. Moira assists Sip in capturing him.

When a massive explosion at a top-secret prison known as the Pit allows notorious serial killer Richard Harris to escape, disgraced FBI agent Bex Henderson is called back into action to hunt him down before he kills again.

Coming Soon...

Annette, Richter and Alucard seek Sekhmet's mummy at the Louvre, where spirits seem to be lighting the way. Juste intervenes in a deadly confrontation.

Martian buys time with a crystal ball bluff to Langley; Blair and Owen hunt out a White Rabbit; Osman raises the stakes; Henry tasks Dr. Blake with an urgent assessment; Danny crosses the Rubicon; with a green light from Bosko, a trap is sprung.

A cold case shifts Jeanette's focus, as Sophia gets some distressing news.

Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far. The Four Opinions won their previous game on a tiebreak, but what does fate have in store for them this time?

Sandi Toksvig takes a QI look at vices and virtues with Eshaan Akbar, Jo Brand, Rhys James and Alan Davies.

Nathan follows a Land Rover he saw launch a spy drone, which leads him to his brother, Caleb, and his girlfriend; convinced their new cleaner Eva took the drug parcel, Johnny breaks into her house to retrieve it.

Dismembered body parts take Nikki into the crumbling world of criminal justice. Can the Lyell team find a missing barrister before it's too late?

Tamar and Nissan must get out of an impossible situation. Faraz proves himself, but Nahid feels trapped. Peterson decides to act.