Viewers have been enjoying John Krasinski’s return in “Jack Ryan” — a lot of viewers.

According to ratings numbers from Nielsen, the Amazon Prime Video action-thriller may be one of the streaming service’s most-watched series.

As Variety reports, the second season of the series inspired by Tom Clancy’s novels boasted an average minute audience of more than 4.6 million viewers after seven days of delayed viewing.

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In addition, the second-season premiere attracted a whopping 7.3 million viewers in the same metric over its first seven days of availability.

As Variety, points out, this is the biggest number for any Amazon series that Nielsen has ever measured. In fact, Nielsen also reported that the second season of “Jack Ryan” attracted more than 9.2 million unique U.S. TV viewers, with about 45 per cent of its average minute audience over the first seven days within the highly desirable 18-49 demographic.

This is a marked improvement over viewership numbers for the first season; an average of 866,000 viewers watched any episode of the second season, compared to 613,000 for the first season.

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This Week On TV: Dec. 2-8