Alcatraz

My husband and I must be the DVR king and queen of the Midwest; we are now in the habit of setting the device to record any new shows we think we might want to follow, in addition to the 10-15 regular shows already in the queue. Once in a while, we come across a gem that we add to the regular offerings and follow religiously, and sometimes we can't delete the show fast enough. For the most part, though, the jury is out until we've watched a few episodes.  Such is the case with Alcatraz.
Based on the theory that Alcatraz didn't close in March 1963 as previously supposed, but the 300+ inmates and guards simply disappeared, and a mass cover up ensued. Each episode follows one of the inmates (or guards, or both) who have mysteriously reappeared 49 years later, having not aged one day, and are reaking havoc in the San Francisco area.  The suspects are hunted by a 20 something year old female cop, a comic store owner with 2 PhD's specializing in Alactraz, as well as a former guard who, as a young man, discovered the empty "rock". Once the criminals  are apprehended, they are returned to a pristine "ward" housed under Alcatraz
There is plenty of action, and I like the premise of the show; being a history buff, this kind of appeals to my delight in the idea of "time travel".  But there are a lot of unanswered questions as well. Why are these prisoners and employees just now returning, and where have they been?  Why haven't they aged?  What is the former guard's connection?
I'm willing to wait it out for a few episodes, and willingly suspend my disbelief, to have these question s answered.  But what bothers me the most is that these questions don't seem to be raised in the show. There doesn't seems to be a sense of suspense to have the questions answered, just to get the prisoners back.  
I'll give it til the end of this pilot season, and then we'll see...