CBS' leading lady sits down with ET's Kevin Frazier to dish on the new season of her show.
"We literally kicked off the season premiere with a two-hour crossover event with one storyline," she said, looking back on the Sept. 21 season opener that began with longtime flagship series, NCIS. "It's really amazing that we can do that."
Next week's episode, "Blind Curves," finds the NCIS: Hawaii team, led by Lachey's Special Agent in Charge Jane Tennant, investigating the world of illegal street racing after a Marine staff sergeant's body is discovered in a junkyard.
"It's like The Fast and the Furious meets NCIS: Hawaii. It's pretty great," the 41-year-old leading lady teased.
Earlier this summer, Lachey and her husband, Nick, celebrated their 11th wedding anniversary. Asked what their secret to maintaining wedded bliss, Lachey acknowledged that it takes hard work on both sides to keep a healthy marriage going.
"You need to communicate. You need to be responsible for your actions, you can't just point a finger. But also, I think, on the flip side, you need to applaud that person when they do something beautiful and right," she shared.
Lachey revealed that they regularly attend therapy sessions -- both as a couple and as individuals, offering one piece of advice she received from her therapist that she found helpful.
"[Our therapist] talks about making love deposits," Lachey said. "And you can't just take. You can't just withdraw. You gotta make a deposit."
NCIS: Hawaii airs Mondays at 10 p.m. ET/PT on CBS.