Son-in-law goes back to drugs and takes off.

There are a few war zones riddled with drugs etc. that you will want to avoid.

Now if the police had a specific reason not to go in like it was a known drug house and dangerous people are squatting there, then that is a reason not to go in.

Finally get him out while he is in jail for beating his wife find drug use in house $5K of rehab plus court, lost rent, and moving the wife out.

Biddeford has more heroin (thought there's drug issues everywhere), but there's an interesting edge/potential to the place. 

Has any landlord here ever had to evict a morbidly obese bisexual drug addict, her fetishist feeder boyfriend, and all their sex toys and vintage fat-fetish porn VHS video collection?

I haven't seen any plans but in the next few years I wouldn't doubt that the mall will have made a 180 degree turn around from the hood drug dealing in the bathrooms and don't go by yourself spot into a nice place. 

Find (and there are a few excellent ones right here on BP) a real negotiator to handle it for you as an investor. lastly, excuse my tone, I'm tweaked out on Rockstar :) my drug of choice these days.

Criminal minds can be so creative, that if chanelled in the right avenues, the success should be equal to if not greater than drugs, guns, and prostitutes.While it may seems simple, to just say "hey why don't you try something legitimate" we are dealing with much much larger socio-economic issues/roadblocks.

Also, if you've been convicted of dealing drugs out of your house, please include conviction paperwork.