Robson Green plays Dr Tony Hill, a clinical psychologist with empathy beyond the established boundaries of his science. Intelligent and compassionate, Tony has always researched convicted killers, but is called to join in an ongoing case by ambitious DI Carol Jordan (Hermoine Norris).

Until now, the only serial killers Dr Tony Hill encountered were safely behind bars. Now the murderer is on the loose. When DI Jordan invites Hill onto the case, they work together to hunt down a vicious serial killer in the opening film "The Mermaids Singing".

The murders are increasingly chilling and each one gets closer to home.

Episodes 1 & 2 "The Mermaids Singing", first part broadcast on ITV1, 14th November 2002, second part 21st November 2002.

Episodes 3 & 4 "Shadows Rising", first part broadcast on ITV1, 28th November 2002, second part broadcast on 5th December 2002.

Episodes 5 & 6 "Justice Painted Blind", first part broadcast on ITV1, 12th December 2002, second part broadcast on 19th December 2002.