Menacing Manor

By Kiersten White

Part of the Sinister Summer series

Twins face lurking dangers and hidden truths at a mysterious science camp.

4.1/5 Goodreads · 589 ratings

272 pages

$17.99Save 6%

In stock. Also at Amazon or Bookshop.

Bookroo's summary

Theo and Alexander Sinister-Winterbottom arrive at Stein Manor Science Camp, determined to uncover their parents' secrets. As they dodge the suspicious Mr. Frank and a lurking foe, they must navigate fake volcanoes, real sea caves, and startling betrayals. With Edgaren’t closing in, the twins hatch a daring plan to finally get answers. Will they succeed, or will the manor's mysteries consume them?

From the publisher

Book four in the tragic series about the Sinister-Winterbottom twins, who must solve one wretched mystery after the next, brought to you by #1 New York Times bestselling author KIERSTEN WHITE. The electrifying penultimate adventure finds the Sinister-Winterbottoms at the manor of Mr. Frank and Dr. Stein! After escaping from Edgaren’t and Dr. Jay, the Sinister-Winterbottoms and their friends arrive at Stein Manor Science Camp. They all work together to distract the friendly teenage camp director so they can explore and look for clues about where their parents might be. Meanwhile, Theo and Alexander settle on a daring plan. They know exactly where Edgaren’t is going to be: coming for them, and the books. This time, they’ll be ready. This time, they’ll get answers. And this time, they won’t trust the adult in charge, which is easy enough when it’s enormous, lurking, unfriendly Mr. Frank. But as they get closer to opening the books and their parents’ histories, an unexpected foe is watching everything they do. . . . Fake volcanoes! Real sea caves! Strangely modified frogs! Startling betrayal! And a lightning-struck manor! all combine for the electrifying penultimate Sinister Summer adventure.

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