It All Came True finds Humphrey Bogart as a gangster on the lam from killing a police stoolie and using a gun that was registered to club piano player Jeffrey Lynn to do the deed. With the stoolie probably telling the cops about his regular hideouts, Bogart has Jeffrey Lynn under a blackmail threat about the weapon hide him in a boarding house that is run jointly by Lynn's mother Jessie Burley and Una O'Connor who is the mother of Ann Sheridan.
Sheridan and Lynn were childhood sweethearts, she's a chorus girl, he's an aspiring composer and the Moms hoped that they'll be joint grandmothers some day. Bogart is hiding under an assumed name at the boardinghouse, but Sheridan recognizes him.
Perhaps the fact that he's away from the police spotlight, fooling them even temporarily makes Bogart fall under the charms of the place which is a theatrical boardinghouse. O'Connor and Burley wax nostalgic about the Gay Nineties and Bogart kind of does also. Bear in mind that this was probably when he was a kid in the film.
It All Came True is the kind of film that would have been better suited to James Cagney. In fact he did several fine nostalgic type films in his career like Frisco Kid, Johnny Come Lately, Strawberry Blonde, and The Time Of Your Life. I'm betting this was a property that Warner Brothers developed for Cagney, but for some reason or other Cagney couldn't do it.
Sheridan's feet are firmly in the 20th century however, she delivers a few zingers that were quite up to date for the audience. Until Rita Hayworth was established, Ann was Hollywood's number one redhead and she had a bit more wit in her scripts than Rita got at Columbia.
Maybe with Cagney in the lead and someone like Frank Capra directing and someone like Damon Runyon doing the screenplay, It All Came True could have been a real classic. It's an amusing comedy as it is with Ann Sheridan at her career height and Humphrey Bogart on the crest of becoming a legend.