Posting on behalf of jane_elliot:

Title: Something of Vengeance by Blackletter
Fandom: Sherlock Holmes/Jeeves and Wooster
Pairing: Sherlock/Watson (established), Bertie/Jeeves
Categories: crossover, angst, action, hurt/comfort
Length: Extremely Epic (~82,000 words)
Warnings: Major character death (see review)

Author on LJ: n/a?
Website: n/a

Review:
An elderly Holmes and Watson find themselves blackmailed by someone Holmes previously put away. The case gets far more complicated when the blackmailer stumbles into Bertie Wooster, starting a series of events that leave none of them unscathed.

At first this crossover doesn't seem very logical, but the more you think about it, the more sense it makes: both canons are set in approximately the same time period, both feature unparalleled geniuses, and both of those geniuses live with writers who adore them. All of which comes together in this brilliant crossover, written from both Bertie and Watson's POVs. The plot is one of the best I've read in either fandom, with blackmail and intrigue and kidnapping and corruption. Couple that with solid characterizations, excellent writing, and plenty of angst and hurt/comfort and you have a novel that fans of either fandom will enjoy.

Note: the one page epilogue contains major character death of the old age variety. If that isn't your thing, the epilogue can be skipped entirely without hurting your enjoyment of the story.

Something of Vengeance