Tyki said
the man sneaks up behind them before turning the glass around them to sand and sealing their mystical energy using a paper tag, rendering them trapped due to the thickness while he manages to get a look at them
He finds all it to be, is an odd triangular device, with in the hood. He then feels a knife to his throat.
"Who are you?" A female voice asks, in an oddly sweet tone. "You seem smart....handsome too...." She giggles.