Bizarre Adventures #25 (1981)

Lethal Ladies
I Got The Yo-Yo... You Got The String - The Black Widow is called upon to assassinate a Russian agent. Unfortunately, that agent was one of her teachers when she worked the red side of the fence, and it's not going to be an easy mission. That is especially true, given that S.H.I.E.L.D. is running a second operation she is entirely unaware of.
Release Date: 1981