She took an oath to do no harm. But to protect the woman she loves, she will break every rule in the world.

Hazel Foster is a vibrant, resilient artist who just wants to paint, pay her bills, and entirely ignore her decade-long crush on her older sister’s terrifying best friend. But when a sudden, violent illness sends her crashing into a Boston emergency room, Hazel wakes up in a high-security billionaire’s penthouse, guarded by the exact woman she’s been desperately trying to avoid.

Dr. Astrid Blackwood is the ruthless, impeccably dressed Chief of Medicine. Cold, calculated, and fiercely protective of her pharmaceutical empire, Astrid does not do attachments. But when her brilliant mind discovers Hazel is not suffering from a random disease—she is being methodically poisoned for a hidden inheritance—the Ice Queen completely shatters.

To keep Hazel safe from an invisible killer, Astrid enforces a strict lockdown. Trapped together while a massive blizzard rages outside, the clinical boundaries between doctor and patient rapidly dissolve. Hazel’s witty banter and radiant warmth strip away Astrid’s heavy armor, revealing a dark, possessive devotion. Astrid will systematically destroy anyone who dares to threaten Hazel, but fighting the lethal attraction pulling them together might be the one battle the billionaire doctor finally loses.