Ghost Motel by Jackie Manthorne

Introducing Harriet Hubbley: down-to-earth dyke from Montreal and self-appointed sleuth.

Harriet is en route to a vacation in Provincetown when she finds refuge from a rainstorm at an eerily deserted motel. The owner, Gertrude Cashin, plies Harriet with brandy and unwelcome advice about love. Harriet is glad to escape, but when she discover that she was the last person to see Gertrude alive, Harriet's investigative instincts take over. Soon, the mysterious death of Gertrude Cashin and the unpredictable life of Harriet Hubbley became equally complicated.