The Favorite Adventures of Mary-Kate & Ashley America's No.1 Detective Kids [VHS]
Mary-Kate and Ashley combine music and mystery in this series  from the mid-1990s in which the girl detectives promise to "solve any  crime by dinner time." In the first episode, a phone call from three  hayseed miners frightened off the lode by a "monster" sends the girls  biking to the rescue. The monster turns out to be a singing scientist  in a HAZMAT (hazardous material) suit who gives viewers a small lesson  on the origin of magma and pumice. Meanwhile, the girls sing  volcanically: "You better run / Don't stand there and gawk / This is  one hot, hot rock." Next, it's off to the funhouse when owners Madame  Zelda and her brother face financial ruin until the twins reveal the  true identity of the ogre who's been terrorizing guests. Finally, a  suspected dragon is breaking windows, making scary sounds, and stinking  up the well in Dead Gulch. Undaunted, Mary-Kate and Ashley don cowboy  boots and ten-gallon hats and head to the Logical I Ranch to follow the  geological clues to their logical conclusion. Each program runs about a  half-hour, is crammed with songs, fashion, and silliness, and will  delight (mostly girls) ages 3 to 7.--Kimberly Heinrichs