Michael C. Grumley

14 books • 2 series

The Breakthrough

Cover of Breakthrough

Book #1: Breakthrough

Cover of Leap

Book #2: Leap

Cover of Catalyst

Book #3: Catalyst

Cover of Ripple

Book #4: Ripple

Cover of Mosaic

Book #5: Mosaic

Revival

Cover of Deep Freeze

Book #1: Deep Freeze

Cover of Cold Storage

Book #2: Cold Storage