Episode 48 is the seventeenth episode of Season 3 of Alex & Co. and the 48th episode overall. It premiered in Italy on February 11, 2017.
Alex and Sara have made the mistake to underestimate Ivan, he is more dangerous than he seemed and suspicions fall on Linda and her influences. Ferrari prevents Emma to meet Ray but she can't help disobeying his father. Meanwhile, Alex tries to tell Clio that under the mask of Nobody there was an impostor, but she doesn't believe him. Later, Ivan challenges Alex once again pretending to be Nobody on the web and Alex accepts the challege.
On the original broadcast on Disney Channel Italy, this episode recap began with the scene of Ivan as Nobody at the Blue Factory and ended with Clio and Alex dancing. Both Rai Gulp and international versions swapped these two scenes for unknown reasons. Scenes in the middle weren't changed.
This episode is titled "The impostor" in France.
Rebecca: Come on, what are those faces? It's Saturday morning shopping, it isn't a Maths test.