Audio problem: 1897: Quentin challenges Barnabas by pulling a decorative sword from a wall display and pointing it at his throat. Unfortunately, the display wasn't all that well attached to the set wall. Though the camera pans away, you can hear a loud clunk as the piece falls, followed by the loud crash of shattering glass as it strikes and breaks a table lamp. You can also see the actors struggling very hard to keep straight faces as they continue with their lines.
Audio problem: In several episodes, there is a shot of the grandfather clock in the downstairs hall. When the camera comes in for a close-up of the face of the clock, a chime can be heard. It is the Westminster chime, which normally sounds on the quarter hour (4 notes), the half (8 notes), the three-quarter (12 notes) and the hour (16 notes plus the number of hours). However, on several occasions, the clock is off-strike, either by the number of notes it chimes or chiming when it normally would not (for example, at 11:20).
Audio problem: 1840: During a graveyard scene, the village bells are tolling the hour, but someone forgets to kill the sound effects tape. The chimes strike sixteen-o'clock.
Audio problem: In Season 1 Episode 2, Victoria says "boo" to a painting but when she visibly says it, we hear the audible boo sound afterwards. It was dubbed poorly. (00:13:44)
Audio problem: In Season 1, Episode 18 there is an audible knocking on Victoria's door prior to Roger walking up to the door and actually knocking. (00:01:57)
Audio problem: 1966: While Constable Carter is grilling Burke Devlin, you can hear crew members talking loudly backstage. In apparent annoyance, "Burke" raises his voice and all but shouts his next line.
Answer: It's probably episode 193 (even though the slate at the beginning says 58). It's the episode with Sam demanding that Roger return his paintings. Three clues from the Dark Shadows Companion and from the comments of Kathryn Leigh Scott and Louis Edmonds all agree that 1) Scott is in the episode and is done for the day prior to Edmonds without his pants; 2) Edmonds is wearing a smoking jacket, and 3) Edmonds is leaning on the mantle (which is actually the cabinet where the liquor is, because the fireplace mantle is too high to lean on and the bench in front of it prevents getting too close to). There are several "breaks" in the lengthy scene where commercial were probably inserted, and all of the shots are above the waist. The previously mentioned episode 54 has Edmonds in a suit and Scott isn't in the episode; episode 54 doesn't have Edmonds or Scott; and episode 86 only has Edmonds in a suit.
Lou Edmonds was a consummate actor and would not forget that he had a lengthy scene to perform. Rather, in Episode 86, Edmonds more understandably forgot that he had to perform one last 15-second scene (a simple toast). He had removed his shoes and pants before he was reminded of the final, brief shot, and he hurried back to complete it.
Charles Austin Miller