From IMDb: In London, a secret society led by lawyer Thaddeus Merrydew collects the assets of any of its deceased members and divides them among the remaining members. Society members start dropping like flies. Sherlock Holmes is approached by member James Murphy's widow, who is miffed at being left penniless by her husband. When Captain Pyke is shot, Holmes keys in on his mysterious Chinese widow as well as the shady Merrydew. Other members keep dying--Malcom Dearing first, then Mr. Baker.

A serial killer appears to be on the loose in London and Sherlock Holmes assists Inspector Gregson of Scotland Yard in the investigation. Holmes is brought into the case when Maude Fenwick asks him to investigate her father, Sir George Fenwick, who has been acting very oddly of late. Holmes had seen him in a hotel bar a few nights before with a very attractive and mysterious woman. - IMDB Description

A mysterious Chinese woman arrives at Charlie Chan's home and is murdered there shortly afterward. The only clues are the ring with which she introduced herself, and the message "Capt K" she scrawled before dying. The screenplay for this movie is almost identical with that for Mr. Wong in Chinatown. Both were written by Scott Darling.

The murder of a district attorney is investigated by two reporters, one of whom is played by Milburn Stone (Doc Adams in "Gunsmoke").

A murderous bank robber (Hugh Beaumont) on the run from the law hides out in a small town, where he gets a job as a cab driver. He meets a young girl (Frances Rafferty) who is caring for her ill but wealthy aunt. He courts her and they eventually marry. She soon discovers exactly who he is, and finds herself enmeshed in a scheme involving murder and loot from a bank robbery.

Taken from the IMDB: Insurance salesman Albert Tuttle arrives at the Cyrus J. Rutherford estate to sell the millionaire some life insurance. Rutherford is already dead and his heirs have gathered at the mansion to hear the reading of the will. Rutherford's will won't be read until he is properly entombed and the heirs are forced to stay on the premises or be denied their inheritance. Tuttle soon finds himself mixed up in shenanigans involving Rutherford's niece, secret passages, a missing body and murder.

"Middle-aged farmer goes to extreme lengths to protect the dark secret associated with a deserted house on his property. Murky psychological thriller with resonant settings and an emotive Miklos Rozsa score." - noir expert Spencer Selby

George M Cohan stars in the 1917 film of his play based on the often filmed Earl Derr Biggers novel.

Upon receiving a death threat from the "Gorilla", a killer infamous for a string of murders, insurance broker Walter Stevens employs detectives Garrity, Harrigan and Mulligan for protection. The detectives arrive at Stevens' mansion that night, and proceed to explore the house and grounds, and question servants. All to no avail, because as the clock strikes midnight Stevens disappears.

Nancy Drew, reporter for the school newspaper, attempts to clear a girl of murder charges. - IMDB Description