Mercedes Mason (credited by birth name Masöhn until 2014) is a Swedish-American actress and former model. She is known for playing the role of Zondra in the television series Chuck, and Isabel Zambada in the procedural drama The Finder. She also starred in the 2011 American horror film Quarantine 2: Terminal, portrayed Louise Leonard in the supernatural drama series 666 Park Avenue (2012–2013), played Talia Del Campo in NCIS: Los Angeles, and was a regular on AMC's television series Fear the Wal ...