Scotland's Daily Record notes (extremely briefly):
"A prayer book that belonged to murderer Dr Crippen, who poisoned his wife and fled to Canada with his mistress, is to be sold at auction in Ludlow, Shropshire. It bears an inscription by Crippen."
For a bit of background, this is Dr. Hawley Harvey Crippen, who is prominently featured in the recent Erik Larson book Thunderstruck (which I reviewed here).
I'm checking for more information on the auction and will hopefully be able to update this with some further details.