Nellie Andreeva, Deadline:

According to sources, Defending Jacob ranks among the top three series premieres for Apple TV+, logging a big opening weekend with viewership continuing to build in Week 2 and the audience growing by five times in its first 10 days (April 24-May 3) to rank among the two fastest-growing series premieres for Apple TV+.

And:

Defending Jacob also is believed to be setting Apple TV+ records for viewer engagement. The vast majority of viewers who sampled the show during its premiere weekend watched all three available episodes, and nearly all who watched those also completed the fourth episode released May 1, I have learned.

Episode 5 of Defending Jacob is scheduled to drop today.