The authors masterfully handle a sizable cast while maintaining momentum…Another clever, energetic addition to an appealing series. – Full Kirkus Review

…Breakfield & Burkey deliver another smashing installment to the Enigma series with The Enigma Threat. There is something for everyone in this exciting and gripping adventure. With characters new and old gracing the pages readers will find the excellent content they’ve come to love and expect from this amazing duo. – Literary Titan Review

The Enigma Threat is a beautifully written, technology-focused tale that is suspenseful while raising questions about privacy, democracy, and the limits of human knowledge… The R-Group will be forced to confront a terrifying, seemingly unbeatable foe. Who will win?   – Authors Reading Review