Wiktionary
credit where credit's due
phr. ''used to justly praise someone''
Wikipedia
Credit Where Credit's Due
"Credit Where Credit's Due" is the second episode of the first season of the American mystery television series Veronica Mars. Written by series creator Rob Thomas and directed by Mark Piznarski, who also directed the pilot, the episode originally aired on UPN on September 28, 2004.
The series depicts the adventures of Veronica Mars ( Kristen Bell) as she deals with life as a high school student while moonlighting as a private detective. In this episode, Veronica's newfound friend Weevil ( Francis Capra) is arrested for credit card fraud, and she goes on the case to figure out who actually did the crime.