You can free download Night Shadows by Stephen L. Brayton in pdf epub format.
May in springtime. The lilacs are blooming, the grass is green…and death lurks in the shadows. After Homicide detective Harry Reznik is called to the scene of a strange pair of deaths, he meets FBI Agent Lori Campisi, who has a history of investigating supernatural occurrences. She believes the murders have been committed by creatures released in our world by a madman. Soon, the unlikely team faced with more attacks. When the case turns personal for each of them, they realize they must work together to find the answer before the capital city is devastated.