Virtual: The Murder of Tyshawn Lee – A Case Study in Complex and High Tech Evidence

July 2, 2020

11:30am – 1:30pm EDT
2-hour presentation includes a Q&A session
CLE: 2 Credits

A team of prosecutors from the Cook County State’s Attorneys Office will discuss the multifaceted trial strategies, traditional and electronic evidence in a high profile homicide case. This case study is divided into three parts: an overview of the case, DNA evidence and the use of complex DNA profiles and probabilistic genotyping, and strategic use of cell phone and other computer-generated evidence. Our speakers will cover Cell Cite HX, as well as downloads such as internet searches, contact lists, and the use of software to download and map out vehicle information.

Presented by:
Thomas J. Darman
Assistant State’s Attorney
Deputy Supervisor
Gangs and Complex Homicide Unit
Cook County State’s Attorney’s Office

Craig Engebretson
Assistant State’s Attorney
Felony Review Unit
Cook County State’s Attorney’s Office

Margaret Hillmann
Assistant State’s Attorney
Felony Trial Division
Cook County State’s Attorney’s Office

Kara Stefanson
DNA Specialist
DNA Unit
Cook County State’s Attorney’s Office

Patrick D. Waller
Assistant State’s Attorney
Gang and Complex Homicide Unit
Cook County State’s Attorney’s Office

Members: $49
Non-Members: $60
If you would like to become a member, please join here!

Interested in a scholarship? Apply now!
The National District Attorneys Association (NDAA), with the assistance of the American College of Trial Lawyers Foundation, is able to provide tuition assistance for Prosecutors who would like to attend our courses. Please find information regarding scholarship eligibility and the application process here.

Continuing Legal Education Credits: 2 hours

This course is pending approval in Pennsylvania but has been approved for CLE credit in Georgia, Kansas, Ohio, South Carolina, and Virginia. NDAA will not be applying for CLE credit in the state of Texas. Many states will allow attorneys to receive CLE credit for virtual courses that have been approved in one of these states through reciprocity or self-submission. Please speak with your CLE accrediting body to ensure that they will allow you to self-submit the course for approval if your state is not listed above.

GoToWebinar will log each attendee’s “time in session” for the webinar. All attendees who sign into the webinar and complete the session will be sent a copy of the PowerPoint presentation, speaker biography, and a Uniform CLE Certificate from NDAA staff following the event.

Attendees must self-submit this course for approval in their home state. All attorneys are responsible for any fees associated with CLE filing. Attorneys seeking CLE credit should contact their state bar associations for more information.  General questions or additional information regarding CLE credit can be directed to Project Coordinator Metria Hernandez at

NDAA’s mission to serve and support prosecutors and their staff. In consideration of this commitment, NDAA requires that all those in attendance of our programs currently work in prosecution. NDAA Invites investigators, prosecutors and paralegals in local, state, tribal, federal and military government attorneys’ offices, and local law enforcement officers who work closely with the prosecutor’s office. If you are not sure about your eligibility, please contact Project Coordinator Metria Hernandez at

Visit our sponsorship opportunities page for more information on how your organization can connect with NDAA attendees.

NDAA works to provide a safe and secure environment for partners and participants. By registering for this event, you agree to abide by NDAA policies and acknowledge the disclaimer and waiver. For more information on NDAA’s policies and procedures, including our Code of Conduct, please visit our Policies page.

NDAA Cancellation, Refund & Substitution Policy*:

NDAA will gladly offer training course attendees a credit for the full course amount which you or an office colleague can use for the rescheduled course or a future NDAA course of your choosing prior to September 30, 2021. As always, substitutions are accepted at any time. Note, NDAA regrets that cash refunds are not available. Please submit all requests to NDAA in writing via email to Project Coordinator Metria Hernandez at

*NDAA reserves the right to update this policy on an as-needed basis.


Please contact Project Coordinator Metria Hernandez at

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Arlington, VA 22202

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