As the rest of the team capture a Columbian Mammoth running rampant on the M25, Stephen allies himself with Helen. The traitor is finally revealed as they attempt to kill Lester and destroy the ARC from within.
When a mammoth tramples commuters on a busy motorway, the secret of the anomalies seems to be out -- hundreds of people have seen the carnage. The creature is captured but when the anomaly closes it is brought back to headquarters. Through misdirection everyone but Lester is lured away from headquarters and Leek attempts to kill Lester with one of his future creatures. Meanwhile the rest of the team is captured by Leek and discover he and Helen are working together to control the anomalies, and have assembled a zoo of ancient and future creatures.—Ron Kerrigan <mvg@whidbey.com>