I haven't ran that many scenarios (I'm mainly invested in a campaign). Edge of darkness, but you already did that one. I can't believe you didn't ran The Haunting already (unless your group has already played that, I've ran it now 3 or 4 times), but that one usually ends in guns-a-blazing too.
I've ran Dinner with Susan, that could be basically solved like Edge of Darkness (and is a nice starter). For my group it ended... strange. Several retreats were involved, as many axe-swings and a few failed rituals.* It ended with two survivors, both heavily wounded, one of which disappeared after a few months.