With a follow-up season already on the books, Freeform‘s “Siren” ended its first season on a five-week high this month. The Season One finale was a hit across several key demos and the episode topped the prior week by 42% in Women 18-34. The final episode of the season had “Siren” ending with a 5-week high on the ratings charts (since 4/19/18).

“Siren” also ended its freshman season with a 4-week highs in Total Viewers, coming in at 1.2M happy mermaid fans. The sci-fi drama ranked as Thursday’s number-one scripted cable program among Females 12-34 and the number-one original scripted cable program in Adults 18-34, Women 18-34, Adults 18-49 and Women 18-49. Not bad for a brand-new show, and it’s great news for everyone working on the new season.

Getting back to the ratings, the “Siren” finale was cable’s top gainer in Live+3 Day playback on Thursday in Total Viewers (+82%) and Adults 18-49 (+93%-tie), proving once again that Freeform users love to stream their favorite shows on their own time, on their own devices. Luckily for them there is Hulu and the Freeform App to keep them entertained for hours on end. “Siren” stars Alex Roe (“The 5th Wave”) as Ben, a bright marine biologist who finds himself drawn to Ryn, a mysterious new girl in town played by Eline Powell (“Game of Thrones”), who is a strange young woman with a deep dark secret. Fola Evans-Akingbola (“An American Exorcism”) stars as Maddie, also a marine biologist who works with Ben, and is highly suspicious of Ryn. Ian Verdun (“Life’s a Drag”) stars as Xander, a deep sea fisherman on a quest to uncover the truth; and Rena Owen (“Star Wars” Episodes II and III) as Helen, the town eccentric who seems to know more about the mermaids than she lets on. Based on a story by Eric Wald and Dean White who both serve as executive producers. Emily Whitesell (“Finding Carter”) is on board as showrunner and executive producer. Brad Luff, Nate Hopper and RD Robb are also attached as executive producers.

“Siren” was one of the highlights of Freeform’s Upfront Presentation this past Spring. During the event, the network confirmed that the series would be coming back for a second season and Freeform introduced the new series set to air over the next year. The two big series scheduled to debut on Freeform are “Besties,” a half-hour multi camera comedy from co-creators Kenya Barris and Ranada Shepard; and the “Pretty Little Liars” spinoff “Pretty Little Liars: The Perfectionists”. That series will feature returning fan favorites Sasha Pieterse as Alison and Janel Parrish as Mona and will star Sofia Carson (Disney’s “Descendants”) as Ava.