Star Trek‘s William Shatner is beaming up to Haven. He’s set to guest star in a four-episode arc on the Syfy drama in 2015. He’ll play what’s described as a pivotal character that has the potential to forever impact the fate of the town of Haven and its troubled residents. Based on Steven King’s novella The Colorado Kid, the series follows former FBI agent Audrey Parker, who becomes a cop in the small town of Haven, Maine, and soon discovers the town’s many secrets, which also hold the key to unlocking the mysteries of her lost past.The mid-season finale airs December 5.