Guilty Until Proven Innocent
Although the ds_harlequin prompt (”Private eye Ray Kowalski is attracted to Benton Fraser from the moment he sees him– in the courtroom where Fraser is on trial for murder….) could have been pure AU, this story posits that Ray became a private detective after being booted from the police force in the aftermath of the Beth Botrelle case, and that during the events of Victoria’s Secret, Ray Vecchio catches up to Victoria…and is killed, and Fraser implicated. This makes for a plausible and fascinating story as it veers only a little distance from canon. There is an “alternate noir ending” which is linked from the last part; I thought it a little too far out to be believable in the context of due South fanfiction, but I sort of prefer it on strictly aesthetic grounds as it’s a totally kickass ending in a structural sense.