Posted on Oct 3, 2017 10:40am PDT
A line-up occurs when an eyewitness witnesses a crime. The police have several people stand side by side while holding numbers and an eyewitness selects the number of the person they saw perpetrate the crime they witnessed from the people standing before them. On Ask the Lawyer, Brendan Bukalski gives more insight into line-ups: http://www.theintelligencer.com/commentary/article/How-suspects-are-identified-and-challenged-12249257.php