The Aikido-Ka is the second book in The Parker Mystery Series featuring Aikido Sensei Parker, a sometimes Private Eye. Parker's old friend Derek Gunner comes to Parker with a request to find the long lost son of his former army Captain who is dying. Barely escaping that meeting with his life Parker figures his job is done, only to find that instead of going back home and teaching aikido he now has to head to the Chicago suburbs and get the young man out of big time trouble. He's in Jail for murder and the F.B.I. is screaming for the locals to release him to their custody as well. Parker does what he has to do in order to find a way to save him and in the process finds a stunning woman lawyer that sweeps Parker away like a good aikido throw.