TruTV has ordered 8 additional episodes of the extreme singing competition series Killer Karaoke, bringing its first-season total to 16. Production is scheduled to begin next month with the series return set for early 2014 with new host Mark McGrath (Don’t Forget The Lyrics!Extra). Inspired in part by British game show Sing If You Can, the series challenges contestants to sing a hit song while being put through extreme, wild and unexpected physical challenges. Killer Karaoke is produced by Zodiak USA, with Tony Yates and James Rowley serving as executive producers.