Child custody and support for divorce

My child is 4.5 yrs and we had 10 yrs of marriage and my wife is very arrogant and is false saying she will change the topic the moment you catch her in any argument, 2 month back she had a argument with my mom and left home keeping child with me, but i asked her that she is free to come and go to meet her child as he is going to school do not ruin her studies and mental balance my child is very playful with my sister and mother which she does'nt like and started saying false information that we let sent her out and then after 2 month she get some consultant and came with the family member and few other and eloped with my child.my son is suffering with them as they started threating and put word in my son mouth that your dadi and bua are not good they are beating your mom which i was shocked when i heard from my son and when i asked he said he heard such thing from wife family, it has been a week that are not good at taking the care of my child. Can i also go and bring my child back i want my child to be with my family and want to have divorce from my wife without giving a single penny because she took the son for asking money from whom soever they consulted, before going from my house she said they do not want him you take care and now they are asking for separate house with me only saying your mother and sister are not good which is totally wrong because everything happen in front of me.