The Perfect Witness, by Iris Johansen. Johansen takes a break from her Eve Duncan series and brings readers a new heroine. Teresa Casali has a unique gift, one that has prompted her to flee her old life and develop a new cover and a new life. She spends years under an assumed name in Witness Protection...until her past catches up with her. For those who like a little metaphysics to go with their suspense.
Festive in Death, by J.D. Robb. Nora Roberts, writing as J.D. Robb, picks up her bestselling Eve Dallas series as 2061 approaches and Eve finds herself dealing with both homicide and the holidays. The series is great fun--if you're new to it, I do recommend starting at the beginning with book 1, Naked in Death.
Haunted, by Kay Hooper. Hooper is back with a new Bishop novel, finding a team of unlikely allies trying to solve a paranormal disturbance and murder in small-town Georgia. The series is growing steadily in popularity, and tends to come in inter-connected trilogies. If you want to get a little caught up but don't want to start all the way at the beginning, try the first book in the most recent trilogy, Haven.