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