Annual Reports

The 2019 annual report of the National Park Service Investigative Services Branch (ISB).

2019 Highlights of ISB

The 2019 annual report of the National Park Service Investigative Services Branch (ISB), with case updates and features from the year.

An ISB Special Agent stands in a desert landscape.

2018 Highlights of ISB

Case updates and features from 2018

An ISB Special Agent steps onto the pontoon of a seaplane.

2017 Highlights of ISB

Case updates and features from 2017

An ISB Special Agent stands atop a steep hillside where another investigator is working.

2016 Highlights of ISB

Case updates and features from 2016

The 2015 annual report of the National Park Service Investigative Services Branch (ISB).

2015 Highlights of ISB

Case updates and features from 2015

The 2014 annual report of the National Park Service Investigative Services Branch (ISB).

2014 Highlights of ISB

Case updates and features from 2014

ISB: the Investigative Services Branch of the National Park Service
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Last updated: May 19, 2020