A DeKalb Police detective will speak about how real-life mysteries are solved at the DeKalb Public Library Thursday.

The event, called CSI: DeKalb, is part of the ongoing Big Read series.

“Detective Michael Stewart will give a presentation,” said Edith Craig, DeKalb Public Library public relations coordinator. “He’ll talk about how real crime scenes are different from how they’re shown on television.”

Stewart will explain things in a detailed way.

As a teen and adult event, the presentation will be given in more graphic detail, Craig said.

“The Big Read book is The Maltese Falcon,” Craig said. “It’s about a detective solving a mystery, so we’re showing how real detectives do things in DeKalb.”

Knowing how real detectives do their work helps the public understand how the police department operates.

“Better communication and better understanding helps us serve the community better,” said Dekalb Police Cpl. Mark Tehan.

CSI: DeKalb is part of Wild Card, a recurring teen event series held by the library.

“Wild Card is something we do every month,” said Steven Roman librarian for the teen section . “It’s something different every time.”

Past Wild Card events varied in content.

“We’ve done board game nights, card game nights and book discussions,” Roman said. “We even once had a Twilight Party when the movie came out.”

Wild Card is held the second Thursday of every month, Roman said.

According to the DeKalb Public Libary’s website, the next Wild Card will be an Arcade Night on Nov. 10 at Star Worlds Arcade, 1234 E. Lincoln Highway in DeKalb.

CSI: DeKalb will be held from 6:30 to 8 p.m. tonight at the DeKalb Public Library, 309 Oak Street in DeKalb.