Death of a Bookseller by Bernard J. Farmer

A title dedicated to the book trade, moving between various London bookshops, with humorous and astute observations about booksellers and rare book collectors. 

“Some dealers and collectors have no conscience whatever. Do you know, Sergeant, there are men and even women who would cheerfully kill me to get what I have found today?” 

When Sergeant Wigan stops to escort a swaying reveler home at the end of his late shift, he is spun a tale of the ups and downs of a life spent collecting and selling rare books. 

His new companion, Michael Fisk, has been celebrating the acquisition of a signed copy of Keats’ Endymion, and a trip into Fisk’s library is enough to convince Wigan to begin his own collection. 

After developing a love for antiquarian books and a friendship with Fisk, Wigan is called upon by the C.I.D. when tragedy strikes and Fisk is found murdered in his library.