Do Detectives Think? (1927)

Stan and Ollie play door-to-door Christmas tree salesmen in California. They end up getting into an escalating feud with grumpy would-be customer James Finlayson, with his home and their car being destroyed in the melee.

Barbershop owners Stan and Ollie answer an ad in the newspaper from a wealthy widow looking for a husband. Ollie only mails in his response and is invited to the widow's mansion. Stan discovers his unmailed letter and insists on tagging along. At the mansion, the widow's creepy butler informs them that the woman is crazy. She was once jilted by an Oliver and now her hobby is marrying Olivers and then slitting their throats. Now the boys must figure out how to escape.

Mr. Pest tries several theatre seats before winding up in front in a fight with the conductor. He is thrown out. In the lobby he pushes a fat lady into a fountain and returns to sit down by Edna. Mr. Rowdy, in the gallery, pours beer down on Mr. Pest and Edna. He attacks patrons, a harem dancer, the singers Dot and Dash, and a fire-eater.

Charlie takes care of a man in a wheelchair.

Buster and a woman are mistakenly married and her initially unfriendly family begins to treat him nicely when they come to believe he has a large inheritance awaiting him.

Although they are successful fishmongers, Stan convinces Ollie that they should become fishermen too, but making a boat seaworthy isn't an easy task.

Street musicians Stan and Ollie have no success earning money in the dead of winter in a bad neighborhood. Their instruments are destroyed in an argument with a woman, but their luck seems to turn when Stan finds a wallet.

Mabel goes home after being humiliated by a masher whom her husband won't fight. The husband goes off to a bar and gets drunk.

Pierre and Jacques are working as waiters at a restaurant where the cooks go on strike. When the two are forced to work as bakers, the striking cooks put dynamite in the dough, with explosive results.

Stan and Ollie are greeting card salesmen who agree to help a woman put a spark in her loveless marriage by making her husband jealous.