Enjoy an eBook of your choice, courtesy of HarperCollins, when you join Kobo.com. 

This month, select from one of the following great titles:

The Elements of Marie Curie by Dava Sobel

Pioneering scientist Marie Curie finds herself entangled in a complex mystery as her pursuit of a groundbreaking element draws her into the depths of a secretive laboratory. Navigating uncharted scientific territory, she becomes the world's best hope for discovery, with stakes that are deeply personal. Will she unlock the secrets that could change the course of science forever?

Dava Sobel, the bestselling author of Longitude, brings her expertise in weaving historical narratives to this captivating tale.

Southern Man by Greg Iles

Can lawyer Penn Cage uncover the truth before it's too late?

In the heart of the Deep South, Penn is drawn into a tangled web of secrets and lies when a shocking crime shakes his hometown. As he delves deeper into the investigation, Penn must confront the dark underbelly of a community he thought he knew, with tensions rising and old wounds resurfacing.

Every Last Suspect by Nicola Moriarty

When a shocking crime rocks her community, the search for truth becomes a perilous journey through a web of secrets and lies. As she digs deeper, she must navigate a maze of deception and betrayal to uncover the truth. With tensions escalating and trust in short supply, can she solve the mystery before it's too late?

The Australian describes Nicola Moriarty as someone who "builds tension expertly".