Dear all,

could anyone tell me what does it mean to " made wrenching" and " in a shocking twist to a case...." in sentences below ?

thank you.

" Portuguese police call parents suspects in missing British girl case

After wide-eyed English toddler Madeleine McCann vanished in May from her family's seaside vacation apartment in Portugal, her parents, Gerry and Kate, stepped in front of television cameras and made wrenching, heartfelt pleas for her return.

But Friday, in a shocking twist to a case that has drawn enormous international attention, Portuguese police questioned both parents at length and then formally named them as suspects, according to McCann family representatives."