Far beneath the ocean, something is awake, ready to begin the defence of our world...

When rumours reach Eden of strange lights beneath the seas surrounding Cuba and Russian spy ships and subs in the area, Lauren and the team quickly realise that the sightings have all the hallmarks of a waiting micro mind. But if so, why hasn't there been an accompanying neutrino burst?

Departing for the island, they are quickly drawn into discovering what happened to a diver and his sister, two treasure wreck seekers who went missing in mysterious circumstances. Could this be linked to what has been happening beneath the ocean, especially as one of them heard a strange, whale-like song before their disappearance? With Mike back on the team, they arrive at Cuba and track down the missing children's father, Carlos Fernández, who has critical information about what happened to his children.

With time of the essence and the realisation that the Overseers are chasing the scent too, Lauren and the group team up with a famous Canadian marine biologist and billionaire, Leon Dupont. His unbeatable experience of deep-sea exploration together with his submersible, Neptune - a craft capable of descending to incredible depths - will be critical to discovering what really happened to the wreck divers.

What they will discover will be the ultimate key to everything that Lauren, Jack and Mike have been working towards. The team stands on the cusp of discovering the true purpose of the micro minds, but can they beat the Russians and their Overseer masters to it before all hope is extinguished for any hope of our planet's survival?

Earth Yell is the sequel to Earth Howl, and is part of the Multiverse Chronicles, an epic series of interlinked stories that follows humanity's struggle to survive across parallel universes.