When his spaceship crashes to earth, a highly advanced alien interferes with lives of two teenagers living on the island of Manhattan during different centuries.
Used availability for Grace Chetwin's Collidescope
March 1990 : USA Hardback
November 2002 : USA Perfect Paperback
Author(s): Grace Chetwin
ISBN: 1-930094-07-8 / 978-1-930094-07-9 (USA edition)
Publisher: Feral Press, Inc.
December 2007 : USA, Canada, UK Kindle edition