Avi Klein is a private investigator in Oakland, California with a law degree from USC. He’s also a former investigative journalist in Washington D.C. who covered the finance, defense, and national security industries. Klein is now managing partner of The Klein Group, a firm that specializes in litigation support, due diligence for investors, locating heirs, and defending contested wills.

Check out Klein’s LinkedIn feed: He shares great information about due diligence, background investigations, and skip tracing. In one post, he writes about what he calls “real locates”—assignments to find people who are tough to trace, like the unhoused, recent college grads, or people who change addresses a lot. “A real locate puts the investigative professional to the proof,” he writes. “You need a Swiss army knife full of tools for each circumstance.”

I love that phrase. It captures the investigator’s skill set perfectly. In the webinar, Avi Klein and I will talk about some tools that should be in a PI’s Swiss army knife. —Hal Humphreys

Hal hosts author Gilbert King, whose Pulitzer Prize-winning book, “Devil in the Grove,” led to the exonerations of four Black men falsely accused of rape in 1949. King is also writer, producer, and host of “Bone Valley,” a new true-crime podcast that uncovers astonishing details of the wrongful murder conviction of Leo Schofield — and evidence pointing to the real killer. It’s riveting storytelling and dogged reporting, a powerful combination.

King spoke with Hal about reinvestigating cold cases and what it means to him to illuminate injustice — on behalf of Schofield and others.