Lauren Kelly

Danny faces a moral dilemma when he's involved with a gun amnesty scheme but suspects a good samaritan may be linked to a robbery.

A gunman invades a family's home, killing the parents and leaving their daughter in a critical condition. As the team struggles to find a motive for such violence, the clues lead to a surprising revelation about Rollins, threatening her career.

Brenda works with Sharon Raydor again when a brawl results in the death of two police officers and a teenage boy.

A rogue FBI agent takes Dr Ellen Sanders hostage after she is chosen to operate on the president, threatening to kill her and her family unless she assassinates him during the surgery.

When Ellen disobeys Duncan's orders and stalls the attempt to assassinate the President during surgery, he threatens to take the life of a member of her family. Ellen begins to realise that there is no one she can trust.

Ellen and Brian decide they won't be able to escape until they've taken Duncan down, so Ellen sneaks away to see a friend of her father's who has previously helped her to solve severe problems in her life.