Jennifer Esposito left Blue Bloods in 2012 after playing the dynamic Jackie Curatola for three seasons. Her departure from the CBS police procedural was something of a dramatic affair as Esposito had been unceremoniously fired. According to The Hollywood Reporter, Esposito had been given doctor's orders to take a week off work because of her celiac disease, but CBS had been convinced it was a scheme to get more money.
Source：https://www.cbr.com/blue-bloods-jennifer-esposito-jackie-returning/
