17. Bölüm

William Campbell

Trelane

Eddie Paskey

Lieutenant Leslie (uncredited)

Michael Barrier

DeSalle

Richard Carlyle

Jaeger

Venita Wolf

Teresa

Frank da Vinci

Clifford Brent

Carey Foster

Enterprise Crew Member (uncredited)

Bart La Rue

Trelane's Father (voice) (uncredited)

Barbara Babcock

Trelane's Mother (voice) (uncredited)