Continuity mistake: Season 4, Episode 18, "Steele at Your Service": When he meets Laura and Mildred in the mansion, Steele takes off his gloves. Just a few shots later, they're back on his hands. (00:16:10)
Continuity mistake: During the last scene of the opening credits, they are robbing the museum and Steele and Laura slide across on a zip line. When Steele catches Laura, she flops over his left shoulder. The shot changes and Laura is instantly upright so she can slide down Steele's body while looking at him romantically.
Visible crew/equipment: Season 4, Episode 22, "Bonds of Steele": When Laura jumps from the moving car, a considerably more muscular stunt woman is apparent as she rolls down the hill and runs across the beach. (00:28:30)
Continuity mistake: Season 4, Episode 22, "Bonds of Steele": When the Unidac security chief confronts Laura, her wind-blown hair changes from over her eyes to not over her eyes with every change of camera angle. (00:25:00)