Watcher 22

If you could change one event from your past, would you?Helena congratulated herself for settling into her life quite nicely-until Brown reappeared as she tidied up after the Wizard of Oz themed party.A disturbing glitch had been discovered in the Watcher 22 program. Helena and the team are reunited to rescue clients unwittingly trapped in their past. With the merest whiff of a threat to national security, MI6 inevitably join the fray. Could the past be reinvented using Watcher 22? Was it time to hit the kill switch? There would always be consequences.