Fans have to bid adieu to hit CBS comedy series "Two And A Half Men" that often features raunchy jokes, savvy dialogues and dynamic relationships. On Feb. 19, season 12 wraps up with an hour long episode "Of Course He's Dead" part one and two.

The title of the episode clubbed by various teasers has given birth to speculations that Charlie Sheen, who played the role of Charlie Harper, will make a comeback for the finale episode. Sheen played the role for eight successful seasons before being axed from the show due to his behavior and fight with executive producer Chuck Lorre. Since then the show has killed off character Charlie Harper and introduced billionaire Walden Schmidt whose role is played by Hollywood actor Ashton Kutcher.

People reports that CBS has confirmed "surprise guest stars", but so far actors and Lorre have been tight-lipped about who they may be. Additionally, Lorre spoke about how the finale will honor both eras of "Two And A Half Men" – one era which had Charlie and the other which had Ashton. He said, "How to honor both (eras) is the challenge of this finale, and the other challenge (is) how to get people to watch it without telling them what it is."

TV Guide also reports that Ashton Kutcher may have dropped a hint on The Ellen DeGeneres show when he made an appearance in December 2014. Moreover, another TV Guide report indicated how Charlie Sheen was eager to make an appearance on the show, saying he has reached out to the network and would want to be part of a send-off. Sheen told TV Guide, "We're trying to figure out what makes the most sense. If they figure it out like I've presented it to them and they want to include me in some final send-off, I'm available and I'm showing up early. If not, it's on them."

Apart from Sheen, fans would love to see Rose, Judith, Evelyn and other characters. Season 12 episode 15 and 16 air on Feb. 19 at 9 p.m. ET on CBS.