Dh has been divorced for 5 years and has a lovely 9 year old son who lives with dh's ex. I have a 6 year old dd who adores her stepbrother, and we have a 2 year old ds together. The ex has always been very hostile even before dh and I met, and has used dss to score points on many occasions, stopped contact on a whim, made false allegations and generally made dss life a misery questioning him following every contact. We had planned a big birthday treat for dss 2 weeks ago but ex refused to let him come as she said he was ill and rearranged for us to pick him up last Friday. When we arrived the house was empty of all furniture. We rang police non emergency no and gave exs parents address about 50 miles away, they promised to send someone to do a welfare check and after 9 phone calls from us over the weekend they confirmed last night that dss had been seen and was fine but ex doesn't want us to know where they are so police can't tell us. What can we do? I know she will have told him we don't want to see him any more.