Jaime Ray Newman (born April 2, 1978) is an American actress, producer and singer. She is known for starring as Kristina Cassadine in the soap opera "General Hospital", Mindy O'Dell in the drama series "Veronica Mars", Kat Gardener in the fantasy series "Eastwick", Lt. Laura Cadman in the science-fiction series "Stargate Atlantis", Tess Fontana in the science-fiction series "Eureka", Kat Petrova in the drama-thriller series "Red Widow", Sam Gordon in the comedy-drama series "Mind Games", Allison Roth in the crime drama series "Wicked City", and Sarah Lieberman in the Marvel series "The Punisher".