Star Trek Spotlight - Toreth - Carolyn Seymour - Face of the Enemy

Romulan Commanders are known for supreme control over their crews and themselves.  In the Star Trek: The Next Generation episode, Face of the Enemy, actress Carolyn Seymour plays Toreth - a woman who must face off with Starfleet officer Troi whose undercover as a Romulan secret service agent.  Troi (Marina Sirtis) plays a kind of CIA and KGB mash-up, an agent of the sinister Tal Shiar.

Toreth has a personal grudge against the Tal Shiar - her father was executed by them for his less than mainstream political views.  Though Troi has to do her duty as a Starfleet officer, it's clear she's pained when she much clash with such a principled woman as Toreth, who under difference circumstances, may just be someone the Counselor would call fond acquaintance or even friend.