"A gem amidst the gravel bed of thrillers that claim to feature martial arts..." (James Grady, author of Six Days of the Condor and Mad Dogs)
"Donohue has truly raised the bar with Tengu, the third installment of his Connor Burke series. This action packed thriller depicts a gritty realism. Once you start reading, it’s hard to put down. Highly recommended!" (Lawrence A. Kane, author of Surviving Armed Assaults)
Donohue hits poignantly and true on something that most martial artists will never feel: the deep emotional shifts as a student’s relationship with a sensei changes to something deeper. A well crafted martial arts thriller, which is something of a rarity. (Sgt. Rory Miller)
"In his third thriller (after Sensei and Deshi), Donohue kicks out prose that is as fluid as the martial arts moves he so eloquently describes..."