Her Sister's Murder by Tara Taylor Quinn

Solving a cold case...and avenging her sister’s murder.

Morgan Davis lost a piece of herself when her twin, Maddie, was killed — and the former FBI agent will stop at nothing to find out who was responsible. So when prime suspect Blade Carmichael is found entangled in another mysterious death, the Sierra’s Web PI springs into action. Even if it means working with her first love, Blade, to finally unearth the truth. Have Blade’s murderous impulses been unleashed again seventeen long years later...or is he the only one who can protect Morgan from a lethal past exploding into their present?