
Continuity mistake: When Donna jumps off the bridge, it's into relatively shallow water under the bridge, and there is land very nearby (at both ends of the bridge). When the camera shows her in the morning, she is suddenly far out to sea in the ocean. (00:01:51 - 00:09:33)
The Strike - S2-E4
Continuity mistake: When the boy opens the double doors to peek in, he only opens them wide enough that his eye is visible. In a following shot, they are now open wide enough that most of his face is visible. (00:12:01)
The Strike - S2-E4
Continuity mistake: When Mitch and the boy shake hands, they're on the very edge of the water - it's barely ankle deep, and there are a bunch of people behind them. When the shot of them being struck by lightning is shown, they're much further into the water (calf-deep), and the people behind them have disappeared.
The Strike - S2-E4
Continuity mistake: After Mitch and the boy are struck by lightning, two male lifeguards run towards them to save them. In subsequent shots, they change into another different male lifeguard and a female lifeguard.
The Strike - S2-E4
Continuity mistake: When the boy walks into the water, the same extra (guy in black shorts with a white horizontal stripe) runs past him in the background twice in quick succession.