As if “Silkworm,” the March 31 episode of FBI: Most Wanted about a rogue FBI agent who is working with the Chinese, didn’t have enough excitement and intrigue, the show added a new take on the silkworm, as a representation of transgenderism. While hunting down rogue Agent Paul Hayden (Joshua Malina), Agent Jess LaCroix (Julian McMahon) also does some digging into someone named “Silkworm."