Steve Carell Is Left Fatherless Steve Carell is set to star in " Imagine " for Warner Bros. Story centers on a rocker who decides to change his life after discovering a letter written to him by John Lennon -- prompting him to track down his biological son, whom he's never met. Carell plays the rocker's son. Dan Fogelman will make his directorial debut on the project, helming from his own script. Please Leave A Comment- Source- Variety