'Elementary' Season 4 Spoilers: 5 Things Revealed About the CBS Show at 2015 NYCC

At the 2015 New York Comic Con at Hammerstein Ballroom on Friday afternoon during the CBS Elementary panel, executive producer Rob Doherty and stars Jonny Lee Miller, Lucy Liu and John Noble teased a bunch of details about the upcoming season.

Here's a brief list of 5 things revealed about the drama (which is based on Arthur Conan Doyle's classic detective series) at this year's NYCC, according to Entertainment Weekly and TV Insider:

1. Sherlock will most probably suffer another relapse: At the end of the third season, Sherlock, played by Miller, hit rock bottom. He ended his sobriety and assaulted another man. It might not be a one-time thing, Miller said at NYCC. "A problem like that doesn't ever go away in someone's life," he explained. "Drug addiction is something that can be handled ... but the problem itself isn't ever going to go away. It's a storyline you can always go back to ... It's not a huge nemesis that is dealt with and then done with."
2. While Sherlock goes through his relapse, Watson will have to deal with a relationship change: Lucy Liu, who plays Sherlock's crime solving partner, Joan Watson, revealed at NYCC that their relationship will develop "on a much deeper manner." "I think the main thing is to billboard the fact that their relationship has developed outside the sober companionship," she said.
3. John Noble joins the cast of Elementary, playing the role of Moreland Holmes, Sherlock's father: Moreland is the enigmatic man who is estranged from his son. At NYCC, Noble spoke on how Moreland's parenting affected Sherlock: "It's not so uncommon that a genius child is eccentric, you know?" he said, waving his hand in Miller's direction. Miller then revealed that Sherlock will be having a tougher time than Moreland at accepting their reunion. "It's interesting just having [Sherlock] be annoyed and flustered," he said to laughter from the crowd. "I think he's expecting more reaction to his disdain for his father ... but it doesn't go anywhere for him, Moreland never really takes the bait, so he's pretty frustrated."
4. Apparently Joan Watson and Moreland Holmes share a complex history: "People's personalities start to change," Liu explained of having a key character enter the story, at NYCC. "It's subtle and important."
5. Last, but not least, Lucy Liu will be getting back in the director's chair: Apparently, Liu has been making her way into directing over the past few years, and she'll continue to do so with Elementary later this year, for episode 22: "It's a wonderful thing to see someone begin to fulfill their dreams and ambitions and progress," Miller said of having Liu direct him in scenes, explaining that Liu's background in acting helps her understand his and the other actors' mindsets. "The care that she takes over that aspect of it ... is very important to Lucy."

Be sure to vote for your favorite celebrities at the 2015 MT Buzz Awards. If you share your vote on Twitter, using #MTBuzzys, then you will be automatically entered in our contest to win a $25 Amazon gift card.