 " Daedalus " is the tenth episode of the fourth season of the American science fiction television series Star Trek : Enterprise . Set in the 22nd century , the series follows the adventures of the first Starfleet starship Enterprise , registration NX @-@ 01 . In this episode , as the crew of Enterprise help Doctor Emory Erickson ( Bill Cobbs ) conduct experimental transporter tests , a dangerous anomaly is detected on board . 
