Season 4 - Episode Guide

After a helicopter sends out a mayday and disappears in a storm en route to provide support to an off-shore oil rig, Sam is called upon to participate on the rescue team in case it turns into a recovery team.

After a helicopter sends out a mayday and disappears in a storm en route to provide support to an off-shore oil rig, Sam is called upon to participate on the rescue team in case it turns into a recovery team.

Sam Ryan takes on a gangland murder case to help builder Brian McNally, whom she believes to be innocent.

Following the death of murder suspect Brian McNally, Sam Ryan is approached by his daughter.

When a dozen people die in a cinema fire, Connor is in charge of the investigation. Sam Ryan is coming back to Cambridge.

Having learned that violent criminal Chris Caldwell may have been wrongly convicted for murder, Sam and DCI Michael Connor are eager to get at the truth.