Sex assault accusations against ex-APA agent renew concerns about alleged abuse of minors in Hollywood

For Jack Edwards, a 15-year-old British actor, it seemed like “the opportunity of a lifetime” — watching a play in London's West End with a Hollywood agent.

In April 2010, the agent, Tyler Grasham of the Beverly Hills-based Agency for the Performing Arts, or APA, was in town with an actor client,...