The premise of new action flick Non-Stop sounds risky - a movie set in a plane where a lone US air marshall struggles to stop a mysterious killer on board from murdering a passenger every 20 minutes.
"Sounds like a possible front runner for a Razzies award," I told myself.
Boy, was I in for a treat.
Non-Stop is exactly that.
It is a gripping, clever, action-come-thriller packed with so many twists and turns, you never see the end coming.