Writer:	Jerry Thomas
Director:	Harry Harris
Star:	Don Marshall (Dan Erickson),  Kurt Kasznar (Commander Alexander B. Fitzhugh),  Don Matheson (Mark Wilson),  Stefan Arngrim (Barry Lockridge),  Gary Conway (Captain Steve Burton),  Heather Young (I) (Betty Hamilton),  Deanna Lund (Valerie Ames Scott)
Guest Star:	Robert Shayne (Mr. Clinton),  Tom Nardini (Carl),  Michael Anderson Jr. (Ben Car),  Oliver McGowan (Dr. John Howard)

Valerie gets a new sport shirt this episode. However, she still wears the same skirt, boots and tights as in the previous episodes. (edit) The producers used a stuffed Chipper as a stand-in for the real one, as the real one would have proven too active for many of the scenes where it was required to be unconscious. (edit) Series regular Heather Young is not in this episode. (edit)

(facing a savage giant dog)
Dan: Let's move closer to show him we're not afraid.
Fitzhugh: Speak for yourself. (edit) (after being tossed around in a tin can)
Mark: You really got clobbered in there.
Steve: That kind of space travel we don't need. (edit)

Within walking distance: a pet store (edit) Supposedly alien planet: the giants in this have very human names, including the generic "Dr. John Howard". (edit)

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