we r seeing a slightly different SS here or ARE WE? he is always a man who plays for his own gain...no matter what...he does all he could through his crooked games...with his family ...so now we r seeing him favoring P over everyone else...why? just bec he now thinks that P will the best choice to take care of samar...but we have seen how quickly he changed sides when he saw menaka n her capabilities to rule over P using her powers of being jethani ...n also when he saw that menaka will raise smar like the way he wants...he completely forgot that he himself had praised P for deciding not to conceive for the future of samar ...here again his priority was samar ...so SS can't be trusted for showing affection to P all the time...or with anyone ...as we saw how he now shouts at M...so what do u think? will his true nature ever be revealed to K or P? ...
this is just a guess : what if M convinces SS that P is wrong n is dangerous to samar or their house n SS decides to do something against P...he has already tried to hit her but K stopped him...so what if SS n M join hands n tries to kill P again n may be kesar also gets well at that time or kesar happens to see it again n she remembers the previous murder attempt n tells kriya or K or P about it? ...n K comes to know about his father's true face finally ?