With echoes of the halls of Hogwart’s, the Fitzgerald kids continue their adventures in Time Benders and the Two Promises. In this second book in the series, the full impact of what Joe has done sinks in, angering Deb and Ken, and causing Ken to pronounce the end of trips in the time machine. Later, when Deb learns about Mr. Brewster’s history, she and Joe defy Ken and take the machine to Las Vegas, 1958 to keep Mrs. Brewster from a certain accident. Bolstered by the success of this trip, Deb decides recklessly to try to undo what Joe had done in his solo trip in the machine, returning to Cambridge to stop Joe. The unknown forces of the universe and energy are working against their efforts to be in the same space and time and Deb barely makes it back alive! All of this creates a rift between Deb and her best friend Mary, because of the spiritual questions of whether one should try to change fate, until she finally understands. When Mary learns she may face a terrible future and major illness, she convinces the Fitzgerald siblings to use the machine to go forward in time to discover her fate. Through all of this, the siblings commit to two major promises about the machine, and their parents. Underpinning all of their adventures, they wrestling with their faith, the questions presented by the time travel and the fact that their trips continue to wreak havoc on their memories. This heartwarming story packs a punch of history, faith, and science sprinkled with kindness through these relatable teens.