Water's Edge - S3-E3
Factual error: Pete Taylor's corpse is a bare skeleton after just two years in the sea-shack's attic, though it shouldn't be. There should at least be traces of hair and clothing surrounding the bones. (00:40:00)
Continuity mistake: When Clemens is stopped by the police, the shoulder of his raincoat is clean, then has wet leaves all over it, then is perfectly clean again. (00:02:30)