Drake Bell is set to break his silence on allegations he was sexually abused as a child star. The 37-year-old actor started his entertainment career aged five with an appearance on ‘Home Improvement’, and will allege in a new Investigation Documentary series he was sexually assaulted by a Nickelodeon dialogue coach when he was a minor. A description for a preview of the show – which is called ‘Quiet on Set: The Dark Side of Kids TV’ – says: “Former Nickelodeon star Drake Bell will be sharing publicly, for the first time, the story of the abuse he suffered at the hands of Brian Peck.” One of Dr…