Hidden Worlds is Book 4 of The McGunnegal Chronicles - a fun, clean, Irish/Celtic fantasy series that's great for ages 8 to 108. It's 1846 in Ireland. Many months have passed since the McGunnegal family discovered that Grandpa had been hiding a secret down in his potato cellar - a relic of a lost age of Ireland that carried them into the world of the Others, where the creatures of Irish legend still live on. But now Henny has been kidnapped by an insane dwarf, and the McGunnegals are forced to do his bidding to get her back. They must attempt to recapture the lost mirror of Mor-Fae from the Terror that haunts the Dismal Bog, then help the dwarf on a mysterious mission that he says will turn all of history upside-down, and make the Others the masters of the world. They also discover that Professor McPherson has been busy as well. He has partnered with the Grimm Brothers to bring certain outcasts and misfits from among the Others to Wales, where he is housing them in the sub-basements of the Ismere School. Strange and mysterious things are bound to happen... The legends of Ireland, Wales, and Cornwall come together in this fabulously fun adventure that whispers of deep things.