Al Mukalama Al Qatila (The Deadly Call)

This suspenseful thriller revolves around Suhair, a rich girl suffering from boredom and a dysfunctional family life.  To amuse herself, she begins prank calling people at random.  At first it is all fun and games, until she calls a man who has just murdered someone and tells him she knows what he did.  Suhair takes the game too far by asking for a ransom in exchange for not exposing the crime, but the game turns into horror as she becomes his target.  Faten, Suhair's cousin, attempts to help her but she mysteriously disappears in a game of cat and mouse.