But what prosecutors called a clear-cut case of child abuse is now mired in doubt. Two doctors working on Dobson’s appeal last year argued that the scientific testimony used against her was fundamentally flawed. A judge overturned the conviction and ordered a new trial, finding that a jury hearing that argument could have had “a reasonable doubt” about her guilt.
Doctors for the prosecution said Trevor had been a victim of Shaken Baby Syndrome, a 40-year-old medical diagnosis long defined by three internal conditions: swelling of the brain, bleeding on the surface of the brain and bleeding in the back of the eyes. The diagnosis gave a generation of doctors a way to account for unexplained head injuries in babies and prosecutors a stronger case for criminal intent when police had no witnesses, no confessions and only circumstantial evidence.