Blake's 7 (1978)

S4E11 Orbit

Egrorian, a brilliant scientist, presents Avon with a formidable device known as the Tachyon Funnel, proposing a trade for Orac. Unbeknownst to Avon, Servalan orchestrates the deal with ulterior motives, devising a scheme to betray him. Her plan aims to secure both the Tachyon Funnel and Orac for herself, setting the stage for a high-stakes confrontation.