Hindsight / Iris Johansen, Roy Johansen.

Enhanced descriptions from Syndetics:

Investigator Kendra Michaels -- once blind and known for her sharp skills -- puts her life on the line to catch a killer in this electrifying novel from the #1 NYT bestselling and Edgar Award-winning duo.
Dr. Kendra Michaels, blind for the first twenty years of her life before gaining her sight via a revolutionary surgical procedure, is a renowned investigator known for her razor-sharp senses -- honed during her years in the dark -- and keen deductive abilities.
Now her skills are needed uncomfortably close to home. Two staff members have been murdered at a school for the blind where Kendra spent her formative years. But the murders are puzzlingly dissimilar: one victim was brutally stabbed, while the other was killed by a bullet to the head. Are the crimes related? Or is Kendra on the hunt for more than one dangerous killer?
With the killer (or killers) still on the loose, Kendra must put her life on the line to unravel a terrifying conspiracy. But Kendra soon discovers that she herself may hold the key to the deadliest secret of all.

Reviews provided by Syndetics

Library Journal Review

When FBI consultant Dr. Kendra Michaels was 20, she underwent surgery that restored her sight. As a result, Kendra has acute and heightened senses that allow her to notice details that other investigators do not. In her latest case, she is assigned to investigate the murder of two beloved staff members at the Woodward Academy for the Physically Disabled, a school that Kendra attended herself. She's having trouble making sense of the murders: one victim was brutally stabbed, while the other was shot in the head. With the killer (or killers) still on the loose, Kendra must put her life on the line to unravel a terrifying conspiracy. Elizabeth Rodgers does an excellent job reading the book and keeping the listener engaged. VERDICT Recommended for mystery and thriller audiobook collections.--Ilka Gordon, Beachwood, OH

Publishers Weekly Review

In bestseller Johansen and son's riveting seventh Kendra Michaels novel (after 2018's Double Blind), FBI consultant Kendra, who has honed a keen sense of observation from years of blindness she experienced as a child, works on a double murder case at a school she once attended, Woodward Academy for the Physically Disabled, in Oceanside, Calif. Kendra, who knew the victims, groundskeeper Ronald Kim and survival skills teacher Elaine Wessler, can't understand who would want to kill them or why. The clues she uncovers with the aid of the FBI lead her to Elaine's ex-husband's apartment building, where she finds the ex-husband on the roof with his throat slit--and eludes the man's possible killers with the help of a friend who arrives at the building in the nick of time. The danger rises as Adam Lynch, a black ops specialist, joins Kendra in her quest for Elaine and Ronald's killers. The authors pepper the twisty plot with plenty of red herrings. Suspense fans are in for a treat. Agent: Andrea Cirillo, Jane Rotrosen Agency (Jan.)

Booklist Review

Unceremoniously pulled from a mission in Afghanistan that once again put her at loggerheads with super-operative and sometime lover Adam Lynch, Kendra Michaels lands back in the U.S. and is immediately inserted into a double-murder investigation at the tony private school for special-needs children where she and her best friend, Olivia Moore, were nurtured and trained. The deaths of dedicated groundskeeper Ronald Kim and beloved professor Elaine Wessler hit close to home for Kendra, who characteristically uses her heightened sensory awareness to uncover clues that elude the FBI. The mystery deepens as the killers' trail leads to a drug cartel's smuggling operation on campus grounds. But why there, and why were Kim and Wessler targeted? The Johansens continue to develop Kendra as a spellbinding heroine surrounded by a coterie of equally strong female friends whose intelligence, courage, and loyalty rival and often surpass those of their male counterparts. Fans of the Kendra Michaels series, which includes Double Blind (2018) and Look behind You (2017), will revel in this riveting tale of intrigue and devotion.--Carol Haggas Copyright 2019 Booklist

Kirkus Book Review

Sparks fly as a woman with extraordinary abilities fights her attraction to a dangerous freelance consultant.Dr. Kendra Michaels has worked with former FBI Agent Adam Lynch before (Double Blind, 2018), but she's furious with him for getting her tossed out of Afghanistan after she sustained a minor wound while trying to root out corruption. Kendra, who was blind until an experimental operation restored her sight at 20, has highly developed senses of smell, hearing, and spatial awareness that she's used to help the FBI and CIA in many difficult cases. Now, as she returns to the U.S., they have another one she can't resist investigating. Elaine Wessler and Ronald Kim, both staff members at her old school, the Woodward Academy for the Physically Disabled in Oceanside, California, have been found murdered for no apparent reason, and FBI Special Agent Michael Griffin is anxious to use her skills and inside knowledge. Elaine had been fostering an unusual guide dog, Harley, who's had problems adjusting since the child he was working with was killed in a gas-main explosion. Now that Elaine is gone, his unearthly howls are upsetting the students. Kendra talks her best friend, Olivia, who's blind, into sharing custody of Harley until they can find him the right home. Meanwhile, she turns up clues the FBI team missed and is rewarded for her efforts with a bomb planted in her car. It turns out to be fake, but it's still a potent warning to walk away. Returning from Afghanistan to help Kendra, Lynch finds her still angry with him and intent on resisting his charms. Her friend Jessie Mercado, a private eye, turns up to help extricate her from a dangerous situation and sticks around to join the hunt for the killers. It will take all of them, including Harley, to solve the violent, complex case and get the school Kendra loves back on track.Mystery, danger, and sexual tension abound in an action-packed thriller that breaks plenty of heads but no new ground. Copyright Kirkus Reviews, used with permission.