ALIENS IN DISGUISE

Although there are a lot of warningsysthems on a
Starship, some aliens can slip on board by pretending
to be a humanoid who has access to the ship. The crew of Captain James T. Kirk discovered an Orian that
pretended to be an Andorian to sabotage the diplomatic talks on Babel. On stardate 4513.3 the Android Norman succeeded to enter the Enterprise and hi-jacked the ship. He took Kirk and his crew to a planet full of Androids who collaborated with the interstellar fraud Harry Mudd. During Picard's command, the Enterprise encountered numerous aliens that could take human forms for all
sorts of secret purposes.