Trepper was a Polish employee at an ATMOS factory. Martha Jones, while working for UNIT, examined Trepper, heard his rapid heartbeat and found out he, and the other ATMOS workers were hypnotised by the Sontarans. (TV: The Sontaran Stratagem)
Trepper was a Polish employee at an ATMOS factory. Martha Jones, while working for UNIT, examined Trepper, heard his rapid heartbeat and found out he, and the other ATMOS workers were hypnotised by the Sontarans. (TV: The Sontaran Stratagem)