SAGINAW, MI -- In cases of serious crime where a suspect is at large, the release of a police sketch or composite can trigger public interest and help identify the person wanted, police say.

But witness descriptions, the artist's ability and other factors all come into play when a sketch is drawn.

Michigan State Police say they don't keep track of how often a suspect sketch leads directly to an arrest. But it does happen.

And when the person is caught, there's an immediate reaction about whether or not the sketch looks like the person.

Forensic sketch artist Sarah Krebs admits some illustrations aren't accurate. But capturing one key detail, such as unusual eyes, teeth, scars or other features, can be enough to prompt recognition, she said.

"Sketches are an investigative tool and are descriptions turned visual," Krebs said.

Nothing is filled in by sketch artists, she said, beyond what witnesses are able to recall and articulate.

Wade Dakin, coordinator of the Michigan State Police's Forensic Artist Unit, says sketches do play a role in police investigations.

"It brings another aspect to law enforcement's ability to be able to conduct a criminal investigation, it gets us another avenue to hopefully catch the individuals who committed the crime," Dakin said.

Related: Sketching suspects: Pencil and paper still tools in arsenal of forensic police artists

With the advent of the 21st century, new techniques including computer-assisted digital composites offer an alternative to traditional sketches. Instead of relying solely on pencil and paper, digital renderings offer realistic features which can be chosen and assembled into a witness-approved resemblance.

Related: See MLive reporter describe coworker for police sketch demonstration

Take a look at the photo gallery to seek some police sketches and composites alongside the photos of suspects in connection with the cases. Could you identify the people based on their sketches?

RJ Wolcott is a reporter for MLive/The Saginaw News. Contact him at 989-280-3850, or by email at