I added this upthread or in one of the earlier threads, worth posting again.
OBSTRUCTION OF JUSTICE:
Obstruction of justice is an attempt to interfere with the administration of the courts, the judicial system or law enforcement officers. It may include tampering with or intimidating,
hiding evidence or interfering with an arrest
more at link:
http://definitions.uslegal.com/o/obstruction-of-justice/
ACCESSORY AFTER THE FACT:
Whoever, knowing that an offense has been committed, receives, relieves, comforts or assists the offender in order to hinder or prevent his apprehension, trial or punishment, is an accessory after the fact; one who knowing a felony to have been committed by another, receives, relieves, comforts, or assists the felon in order to hinder the felon's apprehension, trial, or punishment. U.S.C. 18
Each state has their own laws and I don't know exactly what the laws are in MD. I do know any of that circle doing the above to hinder or prevent the offender risks some serious repercussions themself. I do not believe for a second only 1 person knows what happened the day PB went missing. There were far too many people in and out of that apartment for only 1 to know.
JMO
ETA: When it comes to drugs, there is a certain quantity (what it is for what drug I don't know) after which the charges automatically include intent to distribute. So depending how much someone has on them when busted they could be charged with intent. (In addition to possession, under the influence etc... )
This circle of people are playing with fire and it is only a matter of time before someone gets burned and wanting to save their own behind will talk or work with LE to obtain additional info regarding PB's disapperance. For all we know that could be occuring right now. (I don't know that it is, or is not, but was just a theory.)