True story: my company (and another company we subsequently bought) was sued because a guy got off a fork truck, climbed a mezzanine, stuck his arm inside an auger that had become jammed, and lost his arm. Our companies were sued because we had worked on the power, controls, and hydraulics of the machine when it was installed -- 8 years prior to the incident.
It languished for roughly 2 years. How, I have no idea. Finally, against my wishes, our insurance company settled with these scumbags for a "nuisance settlement."
I'm sure there are some PI attorneys who are decent people. But, as a group, I generally see them as payday lenders in a suit. And I just have virtually no respect for our whole tort industry -- especially when they try to tell us it's about delivering justice.