The much-awaited PBS “Masterpiece Mystery” series “Sherlock,” the updated revamp of Sir Arthur Conan Doyle’s iconic mystery tales, returns with its third season and it is reportedly the craziest of them all.

The first episode, “The Empty Hearse,” premiering Sunday night, picks up after two years of Sherlock Holmes' death, which took place in the second season's final episode. The much-awaited answer to the question -- How did he survive his leap off the roof of St. Bart’s Hospital? -- will be revealed in the first episode of the new season.

According to reports speaking about the return of the series, executive producer, writer and co-creator Steven Moffat, said: "It's been a long time since Sherlock Holmes jumped off that roof - it's time to reveal the truth about what happened between him and the pavement."

The episode will offer various scenarios stating how Holmes staged his death and how well the detective's fake death is received by John Watson, Mrs. Hudson and Inspector Lestrade.

Sunday’s premiere will introduce some new characters while featuring familiar faces, including Una Stubbs as Mrs. Hudson, the landlady at 221B Baker Street; Rupert Graves as D.I. Greg Lestrade, Holmes' friend at Scotland Yard; and Louise Brealey as Molly Hooper, the accommodating pathologist at St. Bart’s morgue.

There’s a great deal of comedy in Sunday’s premiere and reportedly the third season of “Sherlock” is the funniest till date.

The second episode, “The Sign of Three,” finds Holmes solving mysteries again, but what makes it the best so far is that it is even more funnier than the first. It’s an unlikely laugh riot as Holmes serves as best man when Watson weds Mary.

The final episode of the season, “His Last Vow,” which will air on Feb. 2, takes a serious return as Holmes tries to solve a case of stolen letters.