A new serial killer is at large in Liverpool. The victims appear to have no connection to each other, and Detective Inspector Andy Ross and the Merseyside Police Force Specialist Murder Investigation Team are brought in to investigate.

The victims are all middle-aged and the police are initially baffled, until a tenuous link suggests the victims were involved in a rape/murder trial fifteen years previously. Ross and his team of detectives soon realize that the killer has a 'murder list' and that unless he or she can be stopped, the city's streets will soon be awash with the blood of the innocents.

The Mersey Ferry Murders is a tale of rage, revenge and retribution, as Ross's team race against time to prevent the killer from carrying out a plan of heinous proportions.