It's easier to find an artist by their work on one-shot secondary characters than on established ones. Thus you don't want to ID the pencils here by looking at House of Secrets host Abel; the soda jerk, in both of his panels, is a typical Mo Marcus character; he looks like he fell lengthwise in a vise.
Most of the framing material in HOS under Dick Giordano's editorship follows a storyline through the introduction, the interludes if any, and into the conclusion of the issue. In #84 the intro leads into the first story but the conclusion follows a different storyline out of the last story. I believe Bill Draut pencilled for himself on the #84 intro. Since he did do full art on most of the HOS frame stories Draut's inking the Marcus conclusion in #84 and the Dick Dillin full frame in #82 does make them look at first glance like his work.
Some Dick Giordano-era House of Secrets attributions
Oct-Nov/69 | #82 | [frame story] | p: Dick Dillin i: Bill Draut |
Realer than Real | p: John Celardo i: Vince Colletta | ||
Sudden Madness | p: Celardo i: Celardo? Giordano? | ||
The Little Old Winemaker | w: D. J. Arneson | ||
Feb-Mar/70 | #84 | [frame conclusion] | p: Mo Marcus i: Draut |
Dec-Jan/71 | #89 | Where Dead Men Walk | w: Jack Oleck |
Jack Oleck is credited on the Direct Currents page in #89.