Diener is a fictional character portrayed by Lee Avant in the TV series The Blacklist.
They appear in 1 episodes out of a total of 218 aired
Episodes1
The Conglomerate (No. 142)
episode S9.E11 march 2022An investigation into the Conglomerate, a group of former government-sponsored assassins, becomes complicated when the task force learns one of its own has ties to the group. Red digs deeper into the events leading to Liz's death.