This is likely the first episode filmed for the fourth season. They are in Poland Springs Maine, (which gets credited in this and the next episode, "Come Out, Come Out Wherever You Are" as well as the fifth episode shown this year, "Build Your House With Their Backs to the Sea"). There is a very lengthy thread by a man named Robert Spears that is still on the message board for this series. Mr. Spears was working at Poland Springs when the company arrived to prepare for and film the episode and he has some interesting observations about his experiences and what the cast members were like when they were there, including a link to some on-set pictures:
http://www.imdb.com/title/tt0053534/board/flat/41570440?p=1 He was involved with preparing the scenes in the boy's bunkhouse and the residence Joan Crawford, Glenn Corbert and the Sheriff's Deputy are riding toward when they get shot at. He also prepared the semi- comic brawl scene in "Come Out, Come Out Wherever You Are". A great book could be written about the residents of the mostly small towns the series filmed their episodes in across America and what they remember about the filming.
Crawford plays a woman who should obviously be about 20 years younger than the actress is, (she was about 60 at the time: like many actresses, determining her actual age is like trying to catch a butterfly). Her jealous lover is played by Patrick O'Neal, who was 36 at the time. He's a deranged artist who first discovered her as a young actress 20 years before, (an element introduced to cover Crawford's age but she would have been about 40 even then). She became his muse and his paintings reflect his ever-changing feeling about her. She got scared by his obsessiveness and in a struggle, he lost the sight in one eye. She's come home in an attempt to evade him but he shows up. She's gotten to know Linc, a camp counselor and he tries to help her. They both wind up captives of the by now totally deranged O'Neal.
Todd has another job at Poland Springs he never seems to be doing. Instead, he's comically pursued by a teenage girl with a crush on him. He never gets directly involved with Linc's story. His scenes are supposed to be comic relief but they hardly go with the over- wrought main story.