Prison officers tend to work with some dangerous, unethical people ... but sometimes, they become those people.

And now, a handful of Pennsylvania prison staff members are charged in unrelated drug smuggling cases, facing felony charges and suspended without pay while awaiting their fate, which could be jail time.

The arrests come after the state Department of Corrections significantly modified security to prevent smuggling — much of which officials have blamed on inmates and outside friends and family.

When the department upped mail and security, it was expected that people would try to sneak contraband in other ways, said spokeswoman Amy Worden. And that just happened to be with the help of prison staff members in a number of cases.

These jobs often involved a large cash bonus for the guards. Most of the prison guards who have been charged in the last year allegedly were receiving thousands of dollars for their extracurricular services inside the prisons.

It was actually a pretty lucrative business until they got caught. Police allege that Damien Robinson, an activities specialist at SCI Somerset, was charging inmates $1,000 to smuggle synthetic marijuana into the prison. Now, that extra cash might be going toward bail payments and court fees.

These pictures let you explore the decaying old York prison, take a look (story continues below).

So here's how prison guards allegedly tried — and failed — to sneak contraband to inmates: