Walker tells his family about the surveillance cameras in their home and partners with Denise to lure out whoever is watching them. Liam doesn’t trust Denise, or her husband Dan,…

Walker realizes his life is at risk and confronts Captain James who confesses to him the real reason Micki went undercover. The Davidsons’ return home sets Abeline on edge as…

A launchpad accident leads to delayed missions and FBI background checks.

A crisis in space puts the Apollo 24 and 25 crews in peril.

Ed handles a trespasser. Ellen and Deke chart a new course without Mission Control. Season finale.