Cheryl Cole obsessed with murder mysteries

London, Nov 27 : Cheryl Cole has gotten herself hooked to documentaries about America's most violent murders.

The 28-year-old British singer has been watching back-to-back episodes of US TV series 'The First 48', which follows the first two days of real-life murder probes in the States as detectives scramble to gather evidence.

Recent episodes include a serial killer who butchered six members of his family, the killing of a wheelchair-bound woman and a victim who was burned alive, the Sun reported.

The show was first aired in June 2004 and till now 11 seasons have been made totalling 191 episodes.