When two homeless men in Las Vegas were murdered in the same location just a month apart, the Las Vegas Police Department devised a plan to catch the killer.
https://www.reviewjournal.com/crime/courts/police-video-shows-hammer-attack-on-mannequin/
https://www.aetv.com/real-crime/this-cop-used-a-dummy-as-decoy-to-catch-a-killer
https://www.washingtonpost.com/news/morning-mix/wp/2017/03/07/to-catch-a-killer-police-leave-mannequin-on-sidewalk-then-watch-as-man-bashes-it-with-hammer/
https://news3lv.com/news/local/metro-reaching-out-to-solve-homeless-homicides
https://www.ktnv.com/news/crime/2-homeless-men-beaten-to-death-near-grand-central-south-city
https://nowiknow.com/attempted-mann-slaughter/
https://www.cbsnews.com/news/man-sentenced-in-hammer-attack-on-mannequin-posed-as-homeless-person/
https://www.spokesman.com/stories/2017/jun/28/man-guilty-of-vegas-hammer-attack-avoids-charges-i/
https://www.reviewjournal.com/crime/courts/man-headed-to-prison-after-attacking-mannequin-in-las-vegas/
https://www.reviewjournal.com/crime/homicides/friends-remember-homeless-man-killed-near-downtown-las-vegas/