A middle-grade mystery series that's spooky, creepy, and filled with gothic twists! Meet the Sinister-Winterbottom twins, who solve mysteries at increasingly bi

A vampire escapes the thrall of Dracula and embarks on her own search for self-discovery and true love in this epic and seductive gothic fantasy from the #1 New

Giant battle robots! Cotton candy betrayal! Blasts from the past! And the ultimate challenge to stay true to themselves and each other await Theo and Alexander

NATIONAL BESTSELLER • Who is Mister Magic? Former child stars reunite to uncover the tragedy that ended their show—and discover the secret of its enigmatic

The spooky summer adventures of the Sinister-Winterbottom twins continue in another gothic mystery: can Theo and Alexander solve the secret of the Sanguine Spa?