San Yélamos

A young businessman wakes up in a hotel room locked from the inside with the dead body of his lover next to him. He hires a prestigious lawyer, and over one night they work together to clarify what happened in a frenetic race agai...

4 mathematicians are invited to solve an enigma. Once there, they're locked in a mechanically shrinking room and given 1 minute to solve each puzzle via cellphone while also figuring out why they're there.