The series, previously known as A Legal Mind, will focus on a brilliant but unmotivated college student (Patrick J. Adams) who is hired by a top Manhattan lawyer (Gabriel Macht).
Spencer will play an attorney who faces off against her former Harvard classmate Harvey Specter (Macht), reports TV Line.
The actress previously played recurring roles on both AMC's Mad Men and TNT's Hawthorne. She recently starred in rejected ABC pilot Grace and has also sold a pilot to sister network ABC Family. In addition, she will appear in upcoming films Cowboys and Aliens and This Means War.
Samantha Who? actor Rick Hoffman, Get Him To The Greek's Meghan Markle, Firefly star Gina Torres and McMillan & Wife's Susan St. James will also feature in Suits, while The Bourne Identity director Doug Liman will executive produce.
The series will premiere on the USA network on June 23.
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