A Rift In Time by Michael R. Stern

A collection of three time travel science fiction novels by Christopher Coates, Gillian Polack & Michael R. Stern, now available in one volume!

Alternate Purpose: In a world devastated by a global pandemic, two scientists develop a radical plan to prevent the catastrophe by sending someone back in time to stop it from happening. But the only person capable of surviving the process is Devin Baker, a man with a troubled past and a dangerous mission ahead. As Devin travels across time, he must face unexpected challenges and confront his own demons to complete his mission. But with the fate of the world on his shoulders, he knows he cannot fail. Will he be able to save the future by altering the past?

Langue[dot]doc 1305: In this time-travel adventure, Professor Luke Mann and his team venture back to 1305 Languedoc with the goal of refining delta T and changing the universe. Medieval historian Artemisia Wormwood accompanies them, but they keep their research a secret from her. With the untested time travel technology and the dangers of altering history, the team explores the village of Saint-Guilhem-le-Desert for nine months, facing many challenges along the way.

Storm Portal: Fritz Russell, a history teacher, finds himself transported back in time to meet General Robert E. Lee after the surrender at Appomattox. Thrilled by the adventure, he soon discovers a mysterious portal that leads to the Oval Office and a new opportunity to serve his country. Hired by the president to help with national security, Fritz faces a perilous task to solve the portal's mystery.