S1·E8 Firewall

Kurdy and Jeremiah find a recon team in enviro suits and capture one prisoner...Quantrell, who commanded Thunder Mountain before the Big Death, when Markus and his father worked there as well. While Quantrell is enigmatic about where he came from, Markus flashes back to when his mother arrived at the quarantined military base and Quantrell left her outside. Markus' father insisted on going out to be his wife, exposing the base. Quantrell escaped to Valhalla Sector. Quantrell's people are tracking him by an implanted GPS tracker and Quantrell warns that now his people are going to emerge an take over. Meanwhile, Lee is apparently working for someone else and lets the enigmatic Ezekiel in to Thunder Mountain. Ezekiel first meets Jeremiah and claims they are brothers.