Sherlock Holmes and Dr. Watson have a storied connection to casinos and gambling in tales by the late Sir Arthur Conan Doyle. One story was called The Adventure of The Double Zero, a murder mystery that Holmes solves by finding a clue at the roulette tables. Other stories include a fondness for gambling. Which turns into a clue in the death of people in London. In that story Holmes fakes his death so he can solve the case incognito.
He shows up in London as a person from India called Rajni Singh He meets the suspected lady killer in a casino where they manage to lose all of his money which causes him to go into utter dejection. She tells him he can buy a new life insurance policy that he can borrow on to help with his devastated finances. All he needs to do is name her friend as the beneficiary.
When Rajni Singh visits her apartment Andrea Spedding, the suspected killer, quickly realizes that Singh is Holmes in disguise. That night as Rajni sleeps a spider comes to his bed via the ventilation system and of course Holmes is prepared and kills the spider. The bite of this specific spider causes excruciating agony and the victims are driven to kill themselves. But Holmes does not have the proof that this lady in behind the threat. Also he discovers footprints that are small as if from a child.
This turn of events is resolved when he trails Spedding to a carnival and sees her and a midget conversing. This accounts for the small footprints, but his life is put in peril one more time when he is captured and put behind Hitler target in a shooting gallery that Watson is trying out. For few minutes one wonders if Watson will kill his friend, but of course Holmes escapes again to prevail in the end.
There are more perils in this twisted plot, but of course Holmes is able to prevail and bring the killers to justice. When one thinks about Sherlock Holmes, wasn't Holmes life one permanent gamble of his life, his fortune and his money .