Tears for the Forsaken by Cara Devlin

After Leo and Jasper are summoned to the reading of a last will and testament for a woman they do not know, they are stunned to receive not only a joint bequest, but also a bidding from the grave: to find out if the woman’s young son fell to his death a dozen years ago…or if he was, as she always suspected, pushed.
Faced with hostility from the grieving family, Leo and Jasper launch an unusual investigation, placing the morgue assistant and the detective inspector on equal footing for the first time. It’s a thrilling change after their budding relationship had been on pause for months while Jasper handled a case in Liverpool. But when a new murder complicates things, and Leo takes on a separate private inquiry, they discover working together is more challenging than either of them anticipated.
As Leo and Jasper untangle a web of family secrets, they unearth a vile truth connecting two deaths, separated by a decade—a truth the killer will stop at nothing to bury, once and for all.

Tears for the Forsaken is the fifth book in Cara Devlin’s romantic historical mystery series set in Victorian London. The Spencer & Reid Mysteries are perfect for fans of Miss Scarlet & the Duke, and readers of Irina Shapiro, Andrea Penrose, and C.S. Harris.