Murder on the Mississippi Queen — Serena B. Miller

Reluctant amateur sleuth, Doreen Sizemore, has vowed to never, ever travel outside her hometown of South Shore, Kentucky again because it seems always discovers a dead body while she's traveling.
Life is finally normal again, but then a newly rich relative offers her the dream of a lifetime -- a trip up her beloved Ohio River on the majestic Mississippi Queen -- and Doreen can't help but break her vow. She's thoroughly enjoying her trip until another murder lands her in jail!