BBC America’s “Killing Eve” series is about halfway through its first season, and it has already become of the network’s top-performing dramas. Not only has the show managed to retain viewership throughout its first season, the show has increased in viewers every week since its premiere. With the summer TV schedule approaching (groan) viewers should definitely add this series to their must-watch list, it should help get you through the doldrums for the next few weeks.

While any show can start off with a bang and sizzle out before the end of its first season, ‘Killing Eve’ is actually doing the opposite. It could be from terrific referrals from impressed viewers; a terrific ad-campaign; or great social-media presence, but people are discovering the series at an impressive rate.

Since the debut of ‘Killing Eve: Episode 1’ on BBC America back in April, the show has grown over 33% in total viewers and a gigantic 61% in adults 25-54. All of this is according to Nielsen Live+3 data. The ratings make “Killing Eve” the only new ad-supported drama in more than a decade to show consecutive ratings growth over its first four episodes across total viewers and both key demos. Sunday night’s fourth episode delivered 892k total viewers and 386k adults 25-54 in Nielsen live+3 ratings.

“We could not be prouder of Killing Eve, or more pleased and gratified by the viewer response to this kick-ass thrill ride of a show,” said Sarah Barnett, president of BBC AMERICA. “From our first conversation with Phoebe, to casting Sandra and Jodie, this has been a joy every step of the way and we so appreciate the fan and critical response to this unforgettable first season. We can’t wait to share these final four episodes and are already looking ahead to season two.”

If you need to catch up, you can now watch the first four episodes on demand, on and on the BBCA app.

Starring Sandra Oh and Jodie Comer, Killing Eve centers on two women; Eve (Oh) is a bored, whip-smart, pay-grade MI5 security officer whose desk-bound job doesn’t fulfill her fantasies of being a spy. Villanelle (Comer) is a mercurial, talented killer who clings to the luxuries her violent job affords her. Penned by Phoebe Waller-Bridge (Fleabag) and based on the novellas by Luke Jennings, Killing Eve follows these two women, equally obsessed with each other, as they go head to head in an epic game of cat and mouse.

It should come as no surprise that BBC America has already renewed the show for a second season.