What if the person they thought they killed was a Wofat lookalike? The secret message that Doris sends may be that Wofat is alive and is somehow Steves half brother. The actor that played Wofat is to appear in the finale.
The actor playing Stanley`s real name is Lawrence Pressman. You are correct, he was in Doogie Howser, but He a doctor in that show. He was I believe , Doogies boss.
As to the question of how they will fit the season in before Magnum comes back, Magnum and Mcgyver will most likely air back to back for the remainder of the season . The Hawaii Five O series finale is a two hour show on April 3rd