The Wave. Between Two Suns, #2

She returned from another world. Earth moved on without her-and now it wants proof. Dr. Elsa Meijer is back in Utrecht, but she is no longer the woman who disappeared near Mount Pilatus. For Elsa, only twelve days have passed since she was taken to Erra, a distant world beneath two suns. On Earth, she has been missing for six weeks. She brings no spaceship and no alien companion. Only memories that are already beginning to fade, a body that no longer behaves as it should, and a piece of material no laboratory can explain.
Her sister fears she has suffered a psychological breakdown. Her university wants to protect its reputation. The media sees a sensational story, while unseen observers appear to know far more about Elsa's return than they should. When Elsa finally publishes her account, everything changes. Across the world, strangers begin reporting the same symbols, dreams, frequencies, and impossible objects. A Japanese engineer, a Peruvian healer, a Norwegian teenager, and a former military pilot become part of a growing network that no government controls-and no intelligence service fully understands.
What began as one woman's testimony becomes a wave. As scientists, journalists, governments, and powerful entrepreneurs compete to explain, exploit, or suppress what is happening, Elsa must decide how much truth humanity is ready to face-and what she is willing to risk to protect it. The Wave is a thought-provoking science-fiction novel about alien contact, consciousness, power, family, and the difficult return from a reality too large to forget.
This is Book 2 in the Between Two Suns series. It can be read as a standalone novel, but the journey begins in Book 1, My Journey to Planet Erra.