CHILLING footage shows the horrific moment a suspect appears to smile up at a CCTV camera before carrying out a brutal attack.
Surveillance clips gave police an insight into the grisly crime, where Reinis Pupolins seemed to lie in wait for his unsuspecting victim before bludgeoning him with a fire extinguisher.
BAFTA nominated series, 24 Hours in Police Custody, is back with a brand new investigation.
The Channel 4 show, which follows Bedfordshire Police’s detective work around-the-clock, shows the painstaking process of unravelling a case.
In Monday night’s episode, the team are called to the scene after a man walks out of a hotel lift clutching a blood-covered fire extinguisher.