Collin Gosselin made a surprise appearance on his family's reality show on Tuesday night. WATCH: Kate Gosselin Says Jon Changed 'Overnight,' Praises Daughter Mady for Speaking Out Against HimCollin's whereabouts has been a point of contention between his mother and father. In a recent interview, Jon told ET that Kate told him that his son was "in a special school for special needs kids with behavioral problems," but also claimed that law enforcement officials told him otherwise. "Kate Plus 8" airs Tuesday nights on TLC. EXCLUSIVE: Jon Gosselin Details Estrangement From His Kids, Says Kate Is Trying to 'Remove Me From the Family'

Source: Fox News January 11, 2017 15:48 UTC