Not Alone by Craig A. Falconer

Aliens exist, the government knows, and Dan McCarthy just found the proof. When Dan McCarthy stumbles upon a folder containing evidence of the conspiracy to end all conspiracies - a top-level alien cover-up - he leaks the files without a second thought. The incredible truth revealed by Dan''s leak immediately captures the public''s imagination, but Dan''s relentless commitment to exposing the cover-up and forcing disclosure quickly earns him some enemies in high places. For his whole life, Dan McCarthy has searched for a reason to believe. Now that he finally has one, he might soon wish he didn''t.... Not Alone is a stand-alone tale of contact and disclosure for the 21st century.

First,Contact