A researcher investigating a notorious serial killer who was hanged 20 years earlier seemingly becomes possessed by the long dead strangler.

Boris Karloff
as James Rankin

Jean Kent
as Cora Seth

Elizabeth Allan
as Barbara Rankin

Anthony Dawson
as Supt. Burk

Vera Day
as Pearl

Tim Turner
as Dr. Kenneth McColl

Diane Aubrey
as Lily Rankin

Max Brimmell
as Newgate Prison Turnkey

Leslie Perrins
as Newgate Prison Governor

Jessica Cairns
as Asylum Maid
John Chard
The Haymarket Strangler Returns! Boris Karloff plays a man who comes to believe that a serial killer from 20 years previously was innocent of the murders for which he was hanged. The case starts to consume him, literally... Based on the story "Stranglehold" written by Jan Read, pic unfolds as ...