The Psychology of Time Travel is the debut novel published by British author Kate Mascarenhas in 2018.

"[2] In 1967 four women scientists invent a time travel machine in their laboratory in the Lake District: At first a rabbit makes the journey to the future and back, then with increased funding, the women journeyed to the future to meet themselves.

On their first television interview Barbara had manic-depressive breakdown in front of the cameras, and returned to Cornwall, and the three women continued without her to form an organization called the Conclave to control the technology in which people meet themselves, even their own deaths.

[3] In 2017 Barbara's grand-daughter Ruby received a message from Grace warning about an elderly woman's future violent death.

In 2018 a Seychellois museum volunteer Odette finds the body in a bolted room from the inside and is determined, with Ruby having a romance with Grace, to find the truth tied up with time-travel...