Talk of the S dhe is taboo in her house. But a sneak look at a chart of her family tree puts Aisling in detective mode. Her grandmother, Bl ithin, had disappeared long ago and was presumed dead. Were the hot-tempered volatile S dhe behind it? This Hallow'een she trespasses on their land and plunges headlong into their madcap subterranean otherworld. The capricious, malicious s dhe force a stinging potion (Helleboraster Maximus) down her throat, shrink her small enough to fit in a sliotar, puck her about senseless in a hurling war, and chain her newly found friend Fachtna to the dungeon walls on death row. Risking everything, she sets out to rescue Fachtna and Bl ith n before undertaking her own perilous escape. This tale steeped in Irish mythology will delight readers of all ages.