Sarah Wayne Callies also known as Rick Grime's cheating wife Lori dropped some hints about the plot line for the Second Season.
In an interview with TV Guide, Sarah states that "that the new 13-part run will focus on the repercussions of Dr. Jenner's whispered words to Rick (Andrew Lincoln)."
"Jenner took blood work, and it's possible maybe he told Rick something about what he saw in his wife's blood work," she speculated. "I'm kind of basing that on the comic [on which the show is based]. I don't know."
Rick and Lori's relationship
"It becomes another secret that Rick is going to keep or not keep," she explained. "[It adds to] the power of what we say to each other and what we hold from one another. I think we all feel the burden of our secrets and we all try to protect each other."
The actress also talked about her surprise on getting the part of Lori Grimes
"I read the script and went in to audition, then I went to my car and started crying," she confessed. "I thought I'd never get this and then they cast me. I've been happy ever since."
AMC's
The Walking Dead will return later this year.