Nøgleord Call

For Jill Johnson (Camilla Belle, The Ballad of Jack and Rose), var dette det perfekte job som bybysitter. Forældrene var ikke hjemme. Køleskabet var fyldt. Børnene var lagt i sæng. Men så ringer telefonen og en ildevarslende stemme spørger, "Har du set til børnene?".Med døren låst, lyset slukket og gardinerne trukket for, ringer Jill til politiet, som sporrer opkaldet - og kan således oplyse at opkaldet kommer inde fra huset. Da den skræmte teenager løber op ad trappen, for at se til børnene, bliver Jill's stille aften som babysitter forvandlet til et nervepirrende mareridt fyldt med spænding, gys og frygt.

Anica Reljic, a former police inspector who now works in a call center, receives a call from Sonja Tosic, a rich single mother who wants to know the identity of the person who is threatening her on the phone. As Anica investigates the threatening calls, she realizes that they are connected to a criminal group from her past life. She tries to warn Sonja, but Sonja disappears, prompting Anica and Tiana, Sonja's rebellious daughter, to go in search of her. They soon discover that Sonja may be the key to uncovering the truth behind an environmental scandal rocking the country: the mysterious poisoning of three boys.