Lassi ja Leevi - Hirviö sängyn alla

Lassi ja Leevi - Hirviö sängyn alla is a single-issue Finnish comic from 1991, published by Semic. This one-shot brings the beloved duo Lassi and Leevi into a standalone, spooky adventure centered on a monster under the bed. It stands as a compact, early example of the long-running series' appeal in the Finnish market.