The Time Dimension

Joe Saxon has a unique skill, he can move at will into alternative parallel dimensions, each one having a different effect relative to normal. In his recent past (see book one of the series), this skill was crucial in assisting the NYPD and the FBI to avert a potentially catastrophic terror attack.
Now he is called on again, this time by MI6, the British agency that deals with foreign threats to the UK. A threat is indeed uncovered, one so deadly that it could change the entire world if not stopped. And this time Joe's opponent is different, he shares Joe's ability plus one more that Joe has to find a way to master if he is to save the world as we know it.