Night Walker is a 1954 spy novel by Donald Hamilton. It was first serialized in Collier's Magazine in 1951 as Mask for Danger.

Navy Lt. David Young hitches a ride with a friendly stranger and wakes up in a hospital bed with a new name and a pretty young wife.

• 1951, US, Collier's, as "Mask For Danger", 6/16/1951, 6/23/1951, 6/30/1951, 7/7/1951, 7/14/1951, serial (literature)
• 1954, US, Dell, Dell First Edition #27, paperback
• 1964, US, Fawcett Publications, Gold Medal k1472, paperback, reprinted several times
• 2006, US, Hard Case Crime #16, ISBN 0-8439-5586-4, paperback

• Sample chapter from Hard Case Crime
• Lott, Rod (2006-05-06). "Bookgasm » Night Walker". Archived from the original on 2006-05-06. Retrieved 2023-12-21.
• Sallis, James (2006-02-05). "A Transgressive Tale of Identity and Angst". Boston Globe. Archived from the original on 2008-05-15. Retrieved 2023-12-21.