A young woman named Deseray Underwood has been found dead, in her London
lodgings, by her finance Samuel Mortimer. The body itself shows no signs
of a struggle. Lestrade, baffled by the cause of death, summons the aid
of Sherlock Holmes and his great powers of deduction. Holmes stumbles
upon one single clue, a crystal blue bottle, which sends him and Watson
on a wild chase through the streets of London in pursuit of answers to
this young woman's sudden demise. A death that would make any benefactor
very wealthy.