Sam learns that the captain of the helicopter died of a heart attack, but she doesn't think it was the cause of the crash, and with 75 helicopters grounded, accident investigator Tony Newsome needs some answers.

Sam learns that the captain of the helicopter died of a heart attack, but she doesn't think it was the cause of the crash, and with 75 helicopters grounded, accident investigator Tony Newsome needs some answers.

Sam searches for the identity of a victim of a cinema fire. A medical artist helps her reconstruct the face, but the result causes some embarassment for the police.

The identity of Body 10 reveals that a violent criminal may have been wrongly convicted of a murder. Sam and DCI Connor are eager to get the truth.

Sam challenges the police after an indepenedent postmortem into McNally's apparent suicide. Further deaths take place.

A small-time criminal is the prime suspect in a gangland murder. Sam Ryan believes he may be innocent.