The Six Million Dollar Man
In 1975, a two-part episode entitled "The Bionic Woman", written for television by Kenneth Johnson, introduced the lead character Jaime Sommers (played by Lindsay Wagner), a professional tennis player who rekindled an old romance with Austin, only to experience a parachuting accident that resulted in her being given bionic parts similar to Austin. Ultimately, her body "rejected" her bionic hardware and she died. The character was very popular, however, and the following season it was revealed that she had actually survived, having been saved by an experimental cryogenic procedure, and she was given her own spin-off series, "The Bionic Woman". This spin-off ran until 1978 when both it and "The Six Million Dollar Man" were simultaneously cancelled, though the two series were on different networks when their final seasons aired.
The Bionic Woman
The most notable of the frequent crossovers between the two shows included a two-part episode in which Steve and Jaime square off against Austin's sometimes-friend/sometimes-enemy Bigfoot and a three-part story arc entitled "Kill Oscar" that aired the first and third parts as "Bionic Woman" episodes and the second part as an episode of "The Six Million Dollar Man". The close connection between "The Six Million Dollar Man" and "The Bionic Woman" was highlighted by the fact that Richard Anderson and Martin E. Brooks played their same characters on two different television shows (eventually) running concurrently on two different networks.
On her own, Jaime's enemies include the Fembots, a line of powerful robots that she fights twice in the series over several episodes. She also thwarts the plan of an aging nuclear scientist named Elijah Cooper to destroy all life on Earth using a doomsday device in "Doomsday Is Tomorrow". Jaime's missions frequently involved undercover work in which she takes on a secret identity, such as a nun, a police officer, a college student, an air-steward, a singer, and a professional wrestler. Her tennis background also came into play occasionally, and she was also from time to time seen having adventures with some of her students in Ojai.