'The Man From U.N.C.L.E'
["The Alexander The Greater Affair Parts 1&2"]
She was the sister of Bruce's mother and although she rarely talked about her family, Miss Cooper had another sister as well - named Miriam.
Miriam Cooper married Harry Baxter and moved with him to Ohio where Harry built an empire in the plumbing fixtures business.
They had a son who grew up to be a brilliant industrialist bent on taking over the entire world. Calling himself "Alexander The Greater", Baxter embarked on this madman's quest with an added challenge: to break each of the ten commandments as he proceeded.
And one of those commandments O'Bviously involved his parents - "Honor Thy Mother And Father". Alexander the Greater had the senior Baxters kidnapped and chained up in a rock quarry where they had to work like slaves.
Luckily for them, U.N.C.L.E. agents Napoleon Solo and Illya Kuryakin (with help from Alexander's soon to be ex-wife Tracey Alexander) were able to track them down and rescue them.
Harriet Cooper must not have been in frequent contact with her sister Miriam Baxter or she would have become concerned after not hearing from her in months. And then she would have involved Bruce in the matter and you know what that means - the Dynamic Duo would have been on the case!