One Small Step (S16E21)

S16E01 C'est La Vie S16E02 Old Scores S16E03 Intelligence Matters S16E04 Please Please Me S16E05 Memoirs of a Fighting Man S16E06 Pretty Woman S16E07 Stumped S16E08 Little White Lies S16E09 Hearts & Flowers S16E10 Give Peace a Chance S16E11 Dead Men Do Tell Tales S16E12 Vendetta S16E13 Sleeping Dogs S16E14 Another Little Piece of My Heart S16E15 Seeds of Destruction S16E16 No Laughing Matter S16E17 Out of Africa S16E18 The Dreams that You Dream S16E19 Mind Games S16E20 The Medium Is the Message S16E21 One Small Step S16E22 Troubled Waters S16E23 Where There's Smoke S16E24 Laying the Ghost