Reading this at the moment:
Child Victims of Stereotypical Kidnappings Known to Law Enforcement in 2011
(NCJ 249249) June 2016
OJJDP NISMART Series, Bulletin, 20 page(s)
Janis Wolak, David Finkelhor, and Andrea J. Sedlak
Abstract:
This bulletin summarizes findings on the incidence and characteristics of stereotypical kidnappings of children in 2011 and compares them with 1997 findings. An estimated 105 children were victims of stereotypical kidnappings in 2011, virtually the same as the 1997 estimate. Most kidnappings involved the use of force or threats, and about three in five victims were sexually assaulted, abused, or exploited. Victims were, most commonly, ages 12 to 17, girls, white, and living in situations other than with two biological or adoptive parents. Half of all stereotypical kidnappings in 2011 were sexually motivated crimes against adolescent girls. Most perpetrators of 2011 stereotypical kidnappings were male, were ages 18 to 35, and were white or black in equal proportions.
http://www.ojjdp.gov/pubs/249249.pdf
Seems interesting so far.