You've heard of the term 'Stone cold killer' but have you ever heard of 'Stoned cold killer'? Well, welcome to the trailer of American Ultra where Jesse Eisenberg plays a secret government asset who doesn't know what he is, well, because he's perpetually stoned.

Written by Max Landis ( Chronicle ), the movie also stars Kristen Stewart, John Leguizamo and Topher Grace. Eisenberg and Stewart had also paired up as leads in the 2009 retro dramedy Adventureland .

Here's the trailer for American Ultra.

Source - Zero Media

American Ultra releases on August 21st.