“The Bell Jar” and “The Time Traveler’s Wife” collide in a unique take on reincarnation. Greta Wells, recently single and suffering the loss of her twin brother, walks into her doctor’s office in 1985 for treatment: She wakes up in 1918 still Greta Wells, but a mother and wife—her brother still living, though dying on the inside. She receives treatment in 1918 as well, and wakes up again in 1941, a free-spirited adulteress flitting through war-era New York City. Greta senses the pattern between her three lives, and begins to think if she can make just one perfect, she can fix all three. The taut writing delivers suspense and romance and is an elegy to New York City.