On August 22, 1922, after overhearing a loud argument between the Oesterreichs and believing Walburga to be in danger, Sanhuber emerged from the attic and retrieved two
.25 caliber pistols from the bedroom bureau. In the ensuing struggle, Sanhuber shot Fred three times, killing him. The two lovers then hastily staged the scene to look like a botched
burglary. Walburga gave Sanhuber all the cash in the bedroom, as well as Fred's diamond watch. Sanhuber then locked Walburga in a closet and tossed aside the key before returning to the attic with the money, watch, and pistols. another of Walburga's lovers, soon discovered that she was having an affair with Shapiro. He went to police and informed them that Walburga had given him a pistol shortly after the murder, asking him to dispose of it in the
La Brea Tar Pits. A neighbor also told police that Walburga had given him yet another pistol shortly after the murder, asking him to dispose of it because it too closely resembled the gun that killed her husband and she "did not want to get into trouble." The neighbor buried the pistol under a rosebush in his garden. Police were able to recover the pistols from both locations. Although badly decayed, both weapons were determined to be of the same caliber that killed Walburga's husband. She was arrested under suspicion of murder. While in jail, Walburga confided to Shapiro that her "vagabond half-brother" was living in the attic of her home and requested he check on his well-being. Upon knocking on the trapdoor leading to the attic, he was greeted by a thin, pale, but cordial Sanhuber, who explained his true relationship with Walburga and eventually confessed to his role in the murder. Sanhuber was arrested and tried for
manslaughter. The unusual circumstances of the case soon reached the press, where Sanhuber was dubbed "The Bat Man." Sanhuber was convicted of manslaughter, but later released because the
statute of limitations had expired. He changed his name to Walter Klein and moved to Canada, where he married another woman, then eventually relocated back to Los Angeles and lived the remainder of his life in obscurity. Walburga's trial ended in a
hung jury (with most of the jurors leaning towards
acquittal), and in 1936 the
indictment against her was finally dropped. She remained in Los Angeles until her death in 1961, at age 80. ==Media==