TV series
A maverick Irish cop takes on the LONDON Crime World
Detective Sergeant Tommy Murphy is a maverick cop with a dark past. After failing a psychiatric assessment, he's given one last chance by his boss and given a dangerous undercover assignment. A loner with little to lose and dealing with everything on his own terms, this time around, however, Murphy has an ally in Detective Inspector Annie Guthrie.
Availability
Murphy's Law premiered September 24, 2001. We don't have a confirmed streaming, rental or purchase option yet.
Detective Sergeant Tommy Murphy is a maverick cop with a dark past. After failing a psychiatric assessment, he's given one last chance by his boss and given a dangerous undercover assignment. A loner with little to lose and dealing with everything on his own terms, this time around, however, Murphy has an ally in Detective Inspector Annie Guthrie.
Choose an episode, then use the watch options above for the show.
Episode 1
Murphy is called back to work after a leave of absence to be at his mother's side. His new job is to attempt to get close to Drew and Billy Johnstone, vicious Belfast criminals now operating in Leicester. Murphy thinks he's found himself a way in when a drug deal goes awry.
Directed by Colm McCarthyWritten by Allan CubittGuest stars Christopher Sandford, Isobel Pravda, Ivana Basic, Rebekah Manning, Leo Wringer, Emil Marwa, Patricia Martin, John Hewitt
Episode 2
Working deep under cover, Murphy manages to gain the trust of Billy Johnstone, while trying to uncover the associations between his brother Drew and a local Asian criminal network.
Directed by Colm McCarthyWritten by Allan CubittGuest stars Christopher Sandford, Isobel Pravda, Ivana Basic, Rebekah Manning, Leo Wringer, Emil Marwa, Patricia Martin, John Hewitt
Episode 3
Murphy ends up being exposed and caught up in a vicious and final showdown between brothers Drew and Billy Johnstone.
Directed by Colm McCarthyWritten by Allan CubittGuest stars Christopher Sandford, Isobel Pravda, Ivana Basic, Rebekah Manning, Leo Wringer, Emil Marwa, Patricia Martin, John Hewitt
Episode information updated Sep 21, 2026
Available now in United States
These shows are available now and closely match Murphy's Law.
James NesbittDS Tommy Murphy
Del SynnottDC Alan Carter
Liam CunninghamDrew Johnstone
Andrea LoweDC Kim Goodall
Claudia HarrisonDI Annie Guthrie
Francis MageeDCS Warren
Jessica OyelowoDC Jackie Cole
Owen TealePaul Allison
BBC OneUnited Kingdom
Tiger AspectUnited Kingdom
Element PicturesIreland
