A modular wall system for use in trade shows includes an upstanding column having a surface, a panel having an end, and a connecting bracket for detachably connecting the end of the panel to the column. The connecting bracket includes male and female interengageable parts, where the female part is attached to the end of the panel and the male part is attached to the surface of the column. The female part includes a slot extending in a direction along the length of the surface of the column. The slot includes opposing outwardly inclined sides. The male part includes opposing sides corresponding in shape to the slot sides and received within the slot to connect the end of the panel and column.