IM Global will take to Berlin The Happytime Murders, directed by Brian Henson (A Muppets Christmas Carol) and penned by Todd Berger (Kung Fu Panda 2) from a story he wrote with Dee Austin Robertson. It takes place in a world where puppets and humans live together, but the puppets are viewed as second-class citizens. When the puppet cast of an 1980s kids TV show gets murdered one by one, a disgraced detective-turned-private eye puppet takes on the case. Katherine Heigl is in advanced negotiations to star. IM Global is selling the pic through its Opus label next week at the European Film Market.