Trip, Reed and Travis are sent to recover 3 Denobulan geologists expulsed from a planet after a coup d'etat, where they study a dangerous phenomenom similar to one threayening their own home world. But problems arise when the scientists refuse to give up their research. Meanwhile, the Enterprise rescues injured Antaran aliens onboard their damaged ship. But some refuse to be treated by Doctor Phlox due to tenses between their species. A Tribble appears in this episode.
 
Guests:
| 
Mark ChaetD.C. Douglas
 Laura Putney
 Henry Stram
 Jamison Yang
 | 
asas
 as
 as
 as
 | 
YolenZepht
 Trevix
 Hudak
 crewmember
 | 
 
Production : #047
| Written by : |   |   Daniel McCarthy | 
| Teleplay by : |   |   Chris Black & John Shiban | 
| Directed by : |   |   Robert Duncan McNeill | 
 
Notes :  Here we discover other Denobulan who are NOT Doctors. The episode is mostly located in caves doing speleology, so Trinner, Keating and Montgomery had to follow special repelling training.
 
Multimédia : 
[ 
Trailer video ] (.mov 1.2Mo) [ 
pictures not extracted yet ].