“Elementary” stars Jonny Lee Miller and Lucy Liu opened up about what it’s been like to play Sherlock Holmes and Joan Watson for about five years now since the CBS series debuted in 2012.

“It’s a strange and wonderful feeling to know that you’ve done a hundred episodes and that you continue to do them,” Liu told Entertainment Weekly at New York Comic Con on Friday, Oct. 7. “Sometimes when the weather is poor and we’re outside and it’s freezing, we’re like ‘Oh my god, how are we gonna get through this,’ and all of a sudden it’s a hundred episode.”

Although Liu admitted that portraying Joan is “very challenging,” the 47-year-old actress said that it was “wonderful to be a part of an iconic, historic piece of literature that obviously has had many iterations.” “It’s been an incredible experience,” she said. “It really has been wonderful.”

For his part, Miller said that playing Sherlock for quite a long time gave him that level of confidence that every actor strives to achieve when portraying a certain character.

“When you get to do something for a long time, you get to know these characters, so you consider walking to the set with real confidence of who that person is. And that’s a real gift to come a long in this line of work, said the 43-year-old actor said.

“Elementary’s” 100th episode is Season 5’s episode 4. The cast and crew shot the episode five weeks ago under the direction of John Polson.

In an Instagram post Liu shared last month, the actress thanked the fans and the whole cast and crew for making the 100 episode milestone possible.

“Elementary’s” next episode, titled “Worth Several Cities,” airs on Sunday, Oct. 16, at 10 p.m. on CBS. Check out the synopsis for the episode below:

“When the leader of a local street gang abducts Holmes to compel him to find the person responsible for a hit on his men, Holmes and Watson get caught in the middle of an international hunt to recover a centuries old, priceless artifact. Also, Watson debates whether a personal favor Shinwell (Nelsan Ellis) asks of her is outside her comfort zone.”