Filled with “breathtaking scenes” and “vivid” ( Publishers Weekly ) imagery, national bestselling author Douglas Carlton Abrams’s riveting ecological thriller blends shockingly true facts with a powerful narrative that pulls readers into a dangerous race through a majestic and mysterious world. Dedicated scientist Elizabeth McKay has spent almost a decade cracking the code of humpback whale communication. Their song, the most complex in nature, may in fact reveal unimaginable secrets about the animal world. When a humpback whale swims up the Sacramento River with a strange and unprecedented song, Elizabeth must decipher its meaning in order to save the whale and ultimately much more. But as her work captures the media’s interest, powerful forces emerge to stop her from revealing the animal’s secrets. Soon, Elizabeth is forced to decide if her discoveries are worth losing her marriage, her career, and possibly her life. Working closely with leading scientists for his extensive research into humpback whales and the harrowing ecological challenges they face today, national bestselling author Douglas Carlton Abrams has created a unique and timeless story that will transform readers and their relationship with the fragile world in which we live.