Now and Again(1999)

Now and Again is a science fiction series that follows Michael Wiseman, an insurance salesman whose brain is transplanted into a genetically engineered body after he's killed in a subway accident. Transformed into a superhuman operative for the U.S. government, Michael becomes a secret weapon against international threats—from terrorists to the mysterious criminal known as "the Egg Man." Under the guidance of his brilliant but demanding mentor Dr. Morris, he possesses extraordinary abilities and strength. Yet Michael faces an impossible conflict: he cannot reveal his survival or new identity to his wife Lisa and daughter Heather, the family he desperately wants to protect. Caught between duty and love, Michael must navigate a dangerous double life while keeping his true self hidden from those closest to him.