Death knells and wedding bells / Eva Gates.

Enhanced descriptions from Syndetics:

Librarian Lucy's wedding is nearly perfect-aside from a missing guest and the strangled body she finds. Now, she must vow to find the killer in this 10th Lighthouse Library mystery.

Lucy and Connor planned for the perfect Outer Banks wedding-and that's exactly what they got. Aside from typical rumblings of familial tensions, the late spring weather allowed for a beautiful day, the food was delicious, and everyone had a good time, until one of the guests goes missing.

Before Lucy can look forward to the rest of her life in Nags Head and the work she does at the Bodie Island Lighthouse Library, she gets a phone call from her boss, Bertie James. Eddie, Bertie's friend, never made it back home after the reception. Initially, Lucy doesn't think anything of it-sometimes wedding guests simply have a little too much fun. But this quickly turns to something darker when she discovers the body of a wedding guest strangled in a locked closet, and the police immediately start asking questions about Eddie. Lucy must figure out if the two are connected before it's too late-both for Bertie's friend and the rest of her wedding guests.

With the Classic Novel Reading Club reading the Selected Works of Edgar Allan Poe-Lucy wonders if the master of the macabre can assist her investigation or if the hunt for the killer's identity will remain as nothing more than an unsolved mystery.