Sienna Mercer Books in Order

A tabloid reporter arrives in Franklin Grove determined to uncover its unusual secrets. Human Olivia and her vampire twin Ivy must work together to divert the investigation before the town's vampires find themselves exposed to the public.

Olivia and Ivy prepare to tell their adoptive parents they have found each other, but Ivy's father resists meeting Olivia. Meanwhile, vampire officials demand that Olivia pass three tests before trusting her with their community's secret.

After moving to Franklin Grove, cheerful Olivia discovers that her opposite in style, goth Ivy, is her identical twin. Their plans to swap identities become considerably more complicated when Olivia learns that Ivy is a vampire.

Ivy's adoptive father plans to move to Europe and take her with him, threatening to separate the newly reunited twins. Olivia and Ivy devise ways to keep their family together and persuade him to remain in Franklin Grove.

Olivia and Ivy travel to Transylvania for a royal vampire wedding. Ivy faces the prospect of attending Wallachia Academy, while human Olivia cannot join her there, raising fresh questions about how the sisters can stay close.

A visit to their vampire relatives in Transylvania leaves Ivy unexpectedly feeling out of place. Olivia attracts a prince's attention, but worries about Jackson back home and what his apparent lack of concern about their separation means.

Visiting their aunt's ranch, Ivy accidentally frightens a horse into escaping and must help recover it without revealing her vampire identity. Back at school, the casting of Romeo and Juliet creates another complication for Olivia and Jackson.

A movie premiere brings new attention to the twins, and a producer mistakes Ivy for Olivia. As the confusion grows, vampire actress Jessica Phelps becomes Olivia's rival for a leading role opposite teen film star Jackson.

Teen movie star Jackson Caulfield comes to Franklin Grove for a film shoot, giving Olivia a chance to pursue acting. Ivy suspects there may be something supernatural about him and investigates whether he belongs to the vampire community.

A Hollywood strike interrupts Olivia's acting plans, so she turns her attention to organising a school dance. Meanwhile, Ivy conceals news about attending a vampire finishing school, leaving Olivia unaware of how long their separation could last.

The twins attend Prince Alex and Tessa's wedding in Transylvania, where Olivia hopes to cover the occasion for VAMP magazine. While she misses Jackson and Ivy adjusts to academy life, an old feud threatens the celebrations.

Olivia wants to tell Jackson about the vampires in Franklin Grove, including her sister Ivy. Officials insist he complete three demanding trials before learning their secret, while Ivy's developing supernatural ability creates another source of uncertainty.

Ivy struggles with the strict rules at Wallachia Academy, far from her sister and familiar surroundings. In Franklin Grove, Olivia impersonates Ivy to gain entry to a concert, discovering that copying her twin can cause unexpected trouble.

Back together in Franklin Grove, Olivia and Ivy face a threat to the vampire community's secrecy. A mysterious blogger appears determined to expose the town's hidden inhabitants, sending the twins undercover to investigate who is behind the posts.

Twin brothers Daniel and Justin Packer reach their thirteenth birthday with an unexpected discovery: one of them is a werewolf. Keeping that secret complicates their school lives, friendships, and Daniel's involvement in a band.

Halloween brings fresh complications for Daniel and Justin as they try to protect their family's werewolf secret. Swapping identities seems like a useful solution, but keeping up the pretence around friends and classmates proves far from straightforward.

Daniel's band prepares for the Battle of the Bands, but missing lyrics threaten its chances. Meanwhile, Justin tries to avoid becoming Homecoming King and hopes Riley will notice him, leaving both brothers juggling school expectations and personal worries.

Ivy dreads modelling at Café Creative's fashion event, prompting Olivia to lend her sister a hand. When a valuable accessory disappears, the twins must put their other concerns aside and investigate the theft before the occasion unravels.

High school brings unwanted popularity for Ivy, whose enthusiastic followers leave her longing for time alone. Olivia has a different project: helping goth Amelia and skater Finn recognise their feelings for each other despite their contrasting interests.

Secrecy seems to be spreading through Franklin Grove, even beyond the usual efforts to hide its vampires. Ivy suspects new arrival Maya is concealing something involving Brendan, leaving her determined to discover what is happening around her boyfriend.

Justin takes dance classes with Riley but fears what his football teammates will say if they discover his new interest. Daniel has a more serious problem: Debi's father believes in werewolves and is growing suspicious of him.

At a Halloween party, Olivia encounters a girl in an unusual red gown whose behaviour makes her question whether ghosts exist. Ivy's doubts weaken when she learns about the long-dead Calhoun sisters and their connection to Franklin Grove.