ABC Family’s “Pretty Little Liars” wrapped its fourth season with strong ratings Tuesday for an episode that also became the most-tweeted series telecast of the year.

Nielsen estimates that “Pretty Little Liars” averaged a 1.3 rating/4 share in adults 18-49 and 3.12 million viewers overall from 8 to 9 p.m., standing as cable TV’s most-watched program in the time period.

Of course, it also dominated in key demos, as it was TV’s top-rated Tuesday telecast in females 12-34 (4.0/15) and cable’s No. 1 program for the night in adults 18-34 (1.9/7), women 18-49 (2.1/6) and several other categories.

According to Social Guide, “Pretty Little Liars” amassed roughly 1.454 million tweets (a 43 share) by nearly 411,000 unique contributors — peaking at a rate of 37,000 tweets per minute.

The series now accounts for the top six most-tweeted TV series telecasts on record, with its high remaining the 1.892 million tweets generated for the show’s summer finale last August.

“Pretty Little Liars” is scheduled to open its fifth season on June 10.