The Visitor (Jack Reacher #4), Lee Child

Two female army high-flyers. Both acquainted with Jack Reacher. Both forced to resign from the service.

Now they're both dead. Found in their own homes, naked, in a bath full of paint. Apparent victims of an army man.

A loner, a smart guy with a score to settle. A ruthless vigilante. A man just like Jack Reacher.

_________Although the Jack Reacher novels can be read in any order, The Visitor is the 4th in the series.