to cling to; to hold on to; to hold fast to; cling to; to hold on to; to hold fast to; to grapple; grapple; to set about doing; to begin; to commence; to undertake; set about doing; to begin; to commence; to undertake; to take hold of; take hold of; to possess; possess; to haunt; haunt; to obtain a clue; to get a lead; obtain a clue; to get a lead; to possess ; to take hold of; to haunt; possess ; to take hold of; to haunt
