Question: when does clay find out he has a son

title: Clay Evans (One Tree Hill)
text: After sleepwalking throughout the whole town and not remembering where and why he went there , Clay checks into a rehab where he meets Logan , a young boy . Clay 's doctor tells him that he is blocking out a memory which is causing him to sleep walk . After hanging out with Logan , Clay has a breakthrough and remembers that Logan is his son . Clay learns that he has blocked out Logan for 6 years . After Clay asks Logan to be in his life , Logan says no and walks out of the room . However Logan soon becomes accepting of Clay and he goes to stay with Clay and Quinn for a sleepover . Logan wants to stay with Clay and Quinn and in the final episode Quinn and Clay get married and adopt Logan . 

Answer: answer: After sleepwalking throughout the whole town and not remembering where and why he went there, Clay checks into a rehab where he meets Logan, a young boy. After hanging out with Logan, Clay has a breakthrough and remembers that Logan is his son.