Fosdick (1916): Modus Operandi System in the Detection of Criminals http://scholarlycommons.law.northwestern.edu/cgi/viewcontent.cgi?article=1392&context=jclc
read one of these interesting articles, outline a thorough summary, and note interesting or unusual points:
1) Fosdick (1916): Modus Operandi System in the Detection of Criminals
http://scholarlycommons.law.northwestern.edu/cgi/viewcontent.cgi?article=1392&context=jclc
OR
2) Identifying Meaningful and Useful (Crime) Patterns
http://www.sagepub.com/upm-data/26412_10.pdf