(Where Were You When the Rain Was Pouring?) Part 1 of a crossover with Magnum P.I.. When a list of undercover CIA agents is stolen, Steve and Five-0 enlist the help of Magnum, Higgins, Rick, and TC to get it back and protect national security. Higgin... (more)s gives Tani some personal advice. The crossover continues on Magnum P.I. S02E12: Desperate Measures (2).