Synopsis

The disappearance of an American architect in Rome suggests a link to an escalating terror threat in New York City. To unravel the connection and locate the missing man, FBI agents Jubal and Nina join forces with Forrester and his Fly Team in Italy. Together, they pursue the trail of the terrorists and attempt to identify their target in the United States. This narrative continues in "Imminent Threat (II)" from Season 5 of FBI and "Imminent Threat (III)" from Season 4 of FBI: Most Wanted.