Always wear sensible shoes while scheming. That's just one nugget revealed in the following sneak peeks at this Tuesday's Pretty Little Liars episode, "Remains of the A."

Watch now as Spencer tries to impart that message to Hanna:

Elsewhere on the installment... Aria and Ezra will have some fun with photography:

... Spencer will dig into some serious online research:

... while also grilling Jason about April Rose:

... and arguing with Hanna over the best ways to expose A:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.