Relevance (The Six Series, book 2.5)

A Six Series Novella

Secretly located in the tunnels under Chicago’s city streets, Cole Enterprise is home to a group of trained soldiers. Jake Aceton is their newest acquisition. Recruited from boot camp before graduation after being handpicked by Grant Jackson, Jake is plunged into the mysterious underground world, forever changing his life.

Regardless of his relevance to Cole Enterprise, Jake has a hard time looking past all he has to give up. Can he learn to live in his own shadow in order to protect those he loves?