Mark Doerr

A series of home invasions and murders in a Denver suburb lead the team to suspect that the killers might be working together.

Skeletal remains with remnants of breast implants are found in Chesapeake Bay; when the body's lower half is discovered, the team realise that initial assumptions about the victim may be wrong.

Don and his team seem to be one step behind a killer who leaves numerological patterns in Bible verses at the scenes of his crimes.

The team gets involved in a prison riot after an inmate asks Hawkes to be at his execution, where he is confronted with faces from his past.

Nate and Sophie are taken hostage in a bank robbery.

When recent recruit Sam McBride assaults Bridget during an end-of-mission celebration, the team have to track one of their own.