Quantum Leap S05E17 - Revenge of the Evil Leaper - September 16, 1987

Having simu-leaped, both Sam and Alia find themselves trapped in a women's prison, accused of murdering a fellow inmate. Their efforts to unmask the real killer are not their top priority as the two attempt to keep Alia's location hidden from her observer, Zoey, who leaps into the same place and time, determined to make Alia pay for her betrayal.