Watch In Tandem Season HD Full Free on solarmovie.do. Watch In Tandem tv series online free. Commander Léa Soler, the new head of the Montpellier investigations division, has to work with Paul...Commander Léa Soler, the new head of the Montpellier investigations division, has to work with Paul Marchal, a brilliant uncontrollable wild card cop who also happens to be her ex-husband...and the father of her two teenage kids.