Mackenzie Mortimer 1 The 25th Hour by Keith B. Darrell The 25th Hour by Keith B. Darrell, in The Adventures of Mackenzie Mortimer: Omnibus Edition (Amber BookSeptember 2018, May 2019).
Mackenzie Mortimer 3 All the Time in the World by Keith B. Darrell All the Time in the World by Keith B. Darrell, in The Adventures of Mackenzie Mortimer: Omnibus Edition (Amber BookAugust 2019, May 2019).
Mackenzie Mortimer 2 The Tomorrow Paradox by Keith B. Darrell The Tomorrow Paradox by Keith B. Darrell, in The Adventures of Mackenzie Mortimer: Omnibus Edition (Amber BookAugust 2019, May 2019).