The Fountain of Youth is just a spring hidden in the backwoods of a rural community in 'Tuck Everlasting,' the G-rated, surprisingly well-crafted new Broadway musical based on Natalie Babbitt's 1975 coming-of-age novel...Its whirlwind adventure plot touches upon serious themes like mortality and loss. Claudia Shear and Tim Federle's book for the musical successfully expands upon these themes. The folksy score (by composer Chris Miller and lyricist Nathan Tysen) emphasizes a child's sense of wonder, along with some tender spots...'Tuck Everlasting' is refreshingly free of camp and flash...Lewis makes an assured, professional debut, capturing Winnie's eagerness and vulnerability.