Elisabeth Waterston

A senator is gunned down at his daughter's wedding; McCoy pushes for a severe sentence and squares up against a formidable DA: his own daughter; Price aims to stay neutral but can't help but empathise with the defendant over a shared trauma.

Still reeling from the shock of recent events, the team use a party as a ruse to corner the collaborators; someone's decision endangers everyone.

Alex risks everything and works with Owen to infiltrate the Collaborators, and soon finds herself embroiled in a plot to bring down the president.

The Collaborators hurtle towards the final stages of their plan, and the task force enlist the help of old friends to prevent Roarke's intended attack on six individual flights.

A man paralysed in a car accident seeks advice when his wife is accused of murder; a woman from Bobby's past comes back into his life.