Doug Dahlgren has 5 audiobooks on Listento.it, narrated by 1 narrator. The most-rated is Eight of Six.

Book Six.... Who is pulling the strings? The reality and legend of The SON are taking a toll on the corrupt organization that hides behind the Star formed of Numbers. Can John and his team stay on track, or will the intricate, multi-level make-up of the syndicate get to them first? The answer to the mystery is buried beneath layers as countless as the petals of an onion, yet the secret and its keepers do not feel safe. Shall they succeed in getting close to The SON? Or will the warning given to Icarus by his father prove to be an omen once again? Silas must watch, listen and learn from each minute detail as he seeks to remove the threat to his friends and his country.
©2013 Doug Dahlgren (P)2020 Doug Dahlgren

Book Three.... Silas attempts to restore his preferred way to work, through re-establishing the rules of secrecy and solitude. His friends try to give him the space he requires, but circumstances call for him to once again work with his associates. Lives are put into danger by a deep, convoluted plot against the very fabric of our country. Book three of The Son continues with the action and suspense that surrounds Jonathan Crane.
©2011 Doug Dahlgren (P)2019 Doug Dahlgren

Book One.... When four members of Congress all die within a few months, each of their deaths appears to be from natural causes. But when mysterious messages begin to appear, in the form of quotations from long dead Revolutionary Heroes, one reporter sets out to prove the existence of a serial killer. His search uncovers dark secrets and an assassin shielded by people who need the very services that only he can provide. Book One of Six
©2010 Douglas E. Dahlgren (P)2019 Douglas E. Dahlgren

Silas is dead. Or at least the world believes he is. Jon attempts to get back to his Basics, with only a small handful of his most loyal aware. A simple case becomes complicated and then needs to be set aside. As the inner circle grows, the son unwittingly adds valuable new allies to his group. Drug cartels and politicians must be dealt with. Jonathan Crane can't escape them. The Basics have come back to him. The Four Samaritans is the fourth book in the series.
©2012 Doug Dahlgren (P)2019 Doug Dahlgren

The fifth book in the series. Operation Melchior-Sanctum was a failure and a potential embarrassment. It went wrong, terribly wrong. So wrong the entire team of DevGru Operators had been quietly retired to head off any bad publicity. But now, those men were being killed one by one, and faster than the law could react. Jon Crane is asked to do the impossible: find out who this killer is and stop him...fast. Working with a group of federal agents, Jon soon learns that this adversary is the most dangerous he has faced and that this killer is his equal in resources and skill, if not more so.
©2013 Doug Dahlgren (P)2020 Doug Dahlgren