The Commander

The perfectly preserved body of a little girl is found in a sealed oil drum.

With a dark history of mental problems and violence, Eric Thornton stands out as the prime suspect in the little girl's murder, but when his own mother is murdered in cold blood, James isn't convinced that Thornton is responsible for either death.

Donald Griffith has defrauded his clients out of millions of pounds. Already arrested and released on bail, when he is found the next day floating in his own swimming pool, it could have been suicide, an angry client, or an irate mistress.

When the autopsy reveals that Donald Griffith did not drown, police focus on the love triangle between his wife, assistant and caterer, but can't be sure which of them instigated Donald's murder.

Blake steps up the investigation into Father Thomas' brutal murder; Alison is taken to the hospital.

The police focus on Denny Wade, who stabbed his wife and was in prison for eight years, but the key piece of evidence is found in events that occurred before the riots took place; Clare warns Doug to stay clear of the investigation.