Benedict Cumberbatch's kiss, apparently, can launch a thousand Twitter followers as the "Sherlock" actor strutted for St. Patrick's Day Parade in Boston while filming a scene for "Black Mass."

English actress Louise Brealey, who played Molly Hopper in "Sherlock," revealed that her Twitter followers ballooned to thousands right after Benedict Cumberbatch's kiss in one of the scenes for the third series of the BBC hit series.

"I got 7,000 Twitter followers within five minutes of that kiss airing. It had doubled by the time the episode ended," she told the Radio Times.

While admitting that the Benedict Cumberbatch's kiss was "hot," she didn't expect the reaction from female fans, which she described as "completely crackers."

Instead of hate messages, however, she received messages of support after the Benedict Cumberbatch's kiss, which she attributed to her character's "unthreatening nature."

"She's an ordinary woman experiencing the agony of unrequited love, and most of us have been there," she added.

Meanwhile, "Sherlock" actor Benedict Cumberbatch filmed his first scenes for the film "Black Mass" where he plays former senator Billy 'The Corrupt Midget' Bulger.

According to Boston Herald, "Sherlock" actor Benedict Cumberbatch strutted down Washington, Mount Vernon and Union streets in Lynn along with a "100-member marching band, a crew of bagpipers, a miss Southie who waved from a convertible, fire trucks, police cars, a posse of faux pols, a pack of anti-busing and pro-Northern Ireland protesters, and a slew of extras playing Southie folk."

There's also Johnny Depp, who plays the lead Whitey Bulger, who is also the brother of Benedict Cumberbatch's character, Billy.

"Sherlock" actor Benedict Cumberbatch was tapped to play Billy Bulger in the new film based on the novel "Black Mass: The True Story of an Unholy Alliance Between the FBI and the Irish Mob" written by former Boston Globe reporters Gerald O'Neill and Dick Lehr.