Vanished by Joseph Finder

Nick Heller gets a phone call from his teenage nephew, Gabe, asking for his help. Nick's older brother, Roger, is missing, and his sister-in-law, Lauren, is in the hospital after being attacked in Georgetown. Nick is a private spy, hired by influential people, sometimes even the U.S. government, for secret investigations. Even though he's been estranged from Roger for years, Nick feels an obligation to help out for Lauren's and Gabe's sakes. Slowly, Nick finds out things about his brother and his employer, Gifford Industries (a defense contractor) that raise even more questions. Will Nick be able to find his brother--dead or alive? With this book, Finder creates a hero, Nick Heller, that will be start of a series. I enjoyed the book, but the author has a long way to go in terms of character development to be as good as Lee Child.