Laura Wood

Raised from infancy by noncorporeal beings, 17-year-old Charles Evans is ferried by an Enterprise crew unaware of his true nature. Once aboard, the teenager develops a crush on Yeoman Rand and proves dangerously unable to wield his enormous psionic powers with maturity until higher authorities intervene.

Accelerated aging affects the senior officers and threatens Kirk's ability to lead.

Expectant Katie (Tina Cole) is distressed by her hugeness until she learns she is to have more than one baby.