Cole pretends to be the perfect husband by sending Leo and Piper on honeymoon to Hawaii and buying expensive gifts such as a new car in "The Fifth Halliwheel". Paige begins to suspect that Cole is a demon again especially when she catches Cole using powers on an innocent but is not sure of what she has seen. Cole as well as Leo calm Paige's fears before sending the power broker demon who had already gone after the innocent after her. The Seer also puts in a plan to make Phoebe pregnant using the full moon and a tonic. The Seer and Cole create a tonic which will ensure that the child is evil. From taking the tonic, the child will take over Phoebe's body and ensure that she remains by his side when she finds out that he is the Source. Phoebe eventually takes the tonic laced with chocolate to make the plan work.