"Elementary" Season 4 Episode 24 definitely looks like a finale worth watching.

In Episode 24 dubbed, "A Difference in Kind," the perpetrator who has been trying to kill Morland (John Noble) will change his tactics into targeting the consultants instead. In order to protect his father, Sherlock and Joan will go on a chase to track down the enemy who has brought Morland running to New York. During the chase, the two will realize the scope of the perpetrator's power.

Despite their success in identifying the killer, Sherlock (Jonny Lee Miller) and Joan (Lucy Liu) will see how dangerous he really is, as well as see the scope of his desire to get revenge. The two will find themselves in danger as they realize that the enemy's next move is focused on killing a new target - them.

The good news is that "Elementary" will be continuing this interesting development into the next season. Although no specific details have been revealed yet, executive producer Rob Doherty shares that Joan's half-sister Lin (Samantha Quan) might come back to get to know Joan more.

Lin has been introduced earlier as the woman who is acquainted with Mycroft (Rhys Ifans) as a move to meet Joan. The two sisters got separated when Joan was adopted after their father left them when they were young. Doherty adds that another possibility for the next season might be meeting the two's father, although nothing has been finalized yet so far. The viewers will have to wait for the next season to be sure.

"Elementary" Season 4 Episode 24 airs Sunday, May 8 at 10:00 P.M.