The BEST episodes written by Charlotte Armstrong
#1 - Sybilla
Alfred Hitchcock Presents - Season 6 - Episode 10
On the passing of his wife, a man reflects on a marriage filled with bitterness and suspicion through the pages of her diary, and comes to realize he never really knew her at all.
#2 - Across the Threshold
Alfred Hitchcock Presents - Season 5 - Episode 22
When his over-bearing mother mentions missing her dead husband, a selfish bachelor is happy to arrange the reunion and enlists his actress girlfriend to help by posing as a clairvoyant.
#3 - The Five Forty-Eight
Alfred Hitchcock Presents - Season 6 - Episode 5
Two passengers on a train leaving Grand Central station at 5:48 - one in fear of his past catching up with him at long last, the other intent on exacting a revenge which will restore the balance of power.