Tonight I Said Goodbye : Lincoln Perry 1

Investigator and former Marine Wayne Weston is found at home, killed by a single gunshot wound to the head, the gun still lying in his right hand. There is no sign of his wife and six-year-old daughter. The police believe Wayne Weston killed his family before turning the gun on himself.
Weston's father is convinced his son was murdered. He turns to Lincoln Perry, former cop, now private investigator, for help. All the evidence supports the police's conclusions, but as soon as he starts asking questions, Lincoln hears rumours of gambling, extortion, and links to Cleveland's Russian mob.
When the FBI asks him to back off, followed by a second murder, Lincoln is more determined than ever to uncover the truth, even if that means putting himself in danger . . .