Blake's 7 (1978)

S2E8 Hostage

The Liberator finds itself under attack from multiple Federation ships, leading to a tense standoff. In the chaos, Travis manages to seize Blake's cousin, asserting that he wishes to ally himself with Blake's crew. As tensions rise, the true motives behind his capture remain uncertain, leaving the crew to question whether they can trust him or if it's a cunning Federation ploy.