State police officer at the crime scene.
Wagner represents police authority against Ransom.
Ransom is arrested after his confession and attack on Marta are exposed.
Marta is examined as a witness and possible suspect by the police.
Marta gives accurate but incomplete answers when questioned during the police investigation.
Wagner assists the official inquiry into Harlan's apparent suicide.
Trooper Wagner participates with the police in investigating Harlan's death at the estate.
They work within the same official investigation.
Trooper Wagner and the local police participate together in securing the scene and following the investigation.
Blanc and Wagner cooperate on the case.
Blanc works alongside the police during the investigation and the final exposure of Ransom.
Explore the full interactive character relationship map of Knives Out