Born William Scott Jon Hofstedt on October 23, 1969 in New York, NY, Jon was raised by his grandparents, and has Puerto Rican descent. He served for eight years in the U.S. Air Force, taking the diploma in acting while still serving in the armed forces. His career began in 1993, but only in 1998 participated in work increased expression, with the drama "Why Do Fools Fall in Love" opposite Halle Berry to. On TV, Hertas participated in several series, including "Sabrina, the Teenage Witch" and the critically acclaimed HBO miniseries "Generation Kill", about the invasion of Iraq in 2003. Since 2009 he plays the ex-military and Detective Javier Esposito in "Castle".
In 2012, he led the NCLR ALMA Award for Favorite TV Actor Supporting Role in a Drama, in addition to the Prism Award for Performance in a Drama Episode along Stana Katic with, the episode of "Castle" 4:09 "Kill Shot".
In June 2013, Jon released the album R & B / pop "Grown & Sexy Music".