"The Mentalist" season 6 finale episode airs this Sunday - find out where to watch online a free live stream of "The Mentalist" season 6 finale! Will Jane finally declare his love for Lisbon?

If you can't make it to a TV by 10pm EST Sunday night to catch "The Mentalist" season 6 finale, click here to watch the last episode of the series online via a free live stream!

If that doesn't work, CBS also offers episodes on their website to watch online the morning after an episode airs.

The synopsis for "The Mentalist" season 6 finale titled "Blue Bird" reads: "In the sixth-season finale, a new lead in a cold case surfaces, forcing Lisbon to postpone her plans to relocate, and this delay allows Jane to examine his feelings for her and decide how to proceed."

Robin Tunney, who plays Teresa Lisbon in "The Mentalist," talked to The Hollywood Reporter about her character's relationship with Simon Baker's character Patrick Jane.

"Lisbon did stand by Jane and was really there for him in the hunt for Red John. They're both lonely people and they had this thing in common. Once that was gone, Lisbon really missed him," Tunney says. "She realized that it wasn't just about catching the bad guy: 'I love being around this person and what does this mean?' The last [few] episodes, [Lisbon's wondering,] 'Is he going to declare himself? Is he going to put himself out there? What are we going to do now?' It's going to come to a head."

Will Lisbon decide to move to Washington, D.C. and end her partnership with Jane, cutting off any possibility of a romance?

"People can expect closure," Tunney added.

Find out by tuning into "The Mentalist" season 6 finale Sunday night, May 18 at 10pm on CBS.