Lewis Carroll wrote two books about Alice: "Alice in Wonderland", which became very famous, and years later he wrote another book, "Through the Looking Glass". They are two seperate stories - in the first one, Alice falls through a rabbit hole into another world, ín the second, she steps through a mirror (a looking glass) into another world. "Through the Looking Glass" is a darker story, more for adults. Alice in Wonderland is now such a famous story, that other writers and film makers have made several different versions - almost all based on only the first book. The famous Disney film is only based on "Alice in Wonderland" and has nothing to do with "Through the Looking glass"