Double Progression is now available on Amazon. Click here to shop.

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Female detective series by author Kristina Fox; fitness mystery set in a small town gym;

Books by Kristina Fox

Book cover of 'Time Under Tension' by Kristina Fox, a suspenseful fitness mystery.

Time Under Tension: Book 1 in the Kelsey James series

Time Under Tension: Book 1 in the Kelsey James series

Time Under Tension: Book 1 in the Kelsey James series

Available on Amazon.com, BarnesandNoble.com, bookshop.org, and books-a-million.com.

Click to Buy Time Under Tension
A fitness mystery book cover featuring a runner and gym imagery.

Double Progression: Book 2 in the Kelsey James series

Time Under Tension: Book 1 in the Kelsey James series

Time Under Tension: Book 1 in the Kelsey James series

Available on Amazon.com.

Click to Buy Double Progression

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