I think the expression [to play false ][1] can also convey the concept:

• to cause misunderstanding of the intentions, opinions, etc. of
• conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end.

Source : www.thefreedictionary.com [1]: http://www.thefreedictionary.com/double-cross

I think the expression play false can also convey the concept:

• to cause misunderstanding of the intentions, opinions, etc. of
• conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end.

Source : www.thefreedictionary.com