Craig Slocum played 2 roles on Dark Shadows, Noah Gifford, helper of Nathan Forbes in the 1795 Flashback, and Harry Johnson, son of Mrs. Johnson, the housekeeper at Collinwood, in the Adam storyline 1968. Here's a list of the tapes and episodes he is on. The first 5 listings are Noah Gifford, all the rest are Harry Johnson.
Ep.# Video Volume
439 V. 42 #2
443 V. 43 #1
444 V. 43 #2
455 V. 45 #3
456 V. 45 #4
472 V. 48 #5
542 V. 62 #4
543 V. 62 #5
552 V. 64 #4
578 V. 69 #5
601 V. 74 #3
610 V. 76 #2
612 V. 76 #4
613 V. 76 #5
615 V. 77 #2
631 V. 80 #3
659 V. 85 #4